US20070072857A1 - Diaryl and arylheteroaryl urea derivatives as modulators of the 5-HT2A serotonin receptor useful for the prophylaxis and treatment of disorders related thereto - Google Patents

Abstract

The present invention relates to certain pyrazole derivatives of Formula (I) and pharmaceutical compositions thereof that modulate the activity of the 5-HT_2Aserotonin receptor.

Compounds and pharmaceutical compositions thereof are directed to methods useful in the prophylaxis or treatment of platelet aggreagation, coronary artery disease, myocardial infarction, transient ischemic attack, angina, stroke, atrial fibrillation, reducing the risk of blood clot formation, asthma or symptoms thereof, agitation or a symptom, behavioral disorders, drug induced psychosis, excitative psychosis, Gilles de la Tourette's syndrome, manic disorder, organic or NOS psychosis, psychotic disorder, psychosis, acute schizophrenia, chronic schizophrenia, NOS schizophrenia and related disorders, and sleep disorders, sleep disorders, diabetic-related disorders and the like.

The present invention also relates to the method of prophylaxis or treatment of 5-HT_2Aserotonin receptor mediated disorders in combination with a dopamine D2 receptor antagonist such as haloperidol, administered separately or together.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS
• This application is a continuation of U.S. Ser. No. 10/895,789, filed Jul. 21, 2004, which in turn claims the benefit of U.S. Provisional Appl. Ser. Nos. 60/489,572, filed Jul. 22, 2003 and 60/503,586, filed Sep. 16, 2003, each of which is hereby incorporated by reference in its entirety.
FIELD OF THE INVENTION
• The present invention relates to certain diaryl and arylheteroaryl urea derivatives of Formula (I) and pharmaceutical compositions thereof that modulate the activity of the 5-HT_2Aserotonin receptor. Compounds and pharmaceutical compositions thereof are directed to methods useful in the prophylaxis or treatment of platelet aggregation, coronary artery disease, myocardial infarction, transient ischemic attack, angina, stroke, atrial fibrillation, reducing the risk of blood clot formation, asthma or symptoms thereof, agitation or a symptom, behavioral disorders, drug induced psychosis, excitative psychosis, Gilles de la Tourette's syndrome, manic disorder, organic or NOS psychosis, psychotic disorder, psychosis, acute schizophrenia, chronic schizophrenia, NOS schizophrenia and related disorders, sleep disorders, diabetic-related disorders and the like.
• The present invention also relates to the method of prophylaxis or treatment of 5-HT_2Aserotonin receptor mediated disorders in combination with a dopamine D2 receptor antagonist such as haloperidol, administered separately or together.
BACKGROUND OF THE INVENTION
• G Protein Coupled Receptors
• G Protein coupled receptors share a common structural motif. All these receptors have seven sequences of between 22 to 24 hydrophobic amino acids that form seven alpha helices, each of which spans the membrane. The transmembrane helices are joined by strands of amino acids having a larger loop between the fourth and fifth transmembrane helix on the extracellular side of the membrane. Another larger loop, composed primarily of hydrophilic amino acids, joins transmembrane helices five and six on the intracellular side of the membrane. The carboxy terminus of the receptor lies intracellularly with the amino terminus in the extracellular space. It is thought that the loop joining helices five and six, as well as, the carboxy terminus, interact with the G protein. Currently, Gq, Gs, Gi and Go are G proteins that have been identified. The general structure of G protein coupled receptors is shown inFIG. 1.
• Under physiological conditions, G protein coupled receptors exist in the cell membrane in equilibrium between two different states or conformations: an “inactive” state and an “active” state. As shown schematically inFIG. 2, a receptor in an inactive state is unable to link to the intracellular transduction pathway to produce a biological response. Changing the receptor conformation to the active state allows linkage to the transduction pathway and produces a biological response.
• A receptor may be stabilized in an active state by an endogenous ligand or an exogenous agonist ligand. Recent discoveries such as, including but not exclusively limited to, modifications to the amino acid sequence of the receptor provide means other than ligands to stabilize the active state conformation. These means effectively stabilize the receptor in an active state by simulating the effect of a ligand binding to the receptor. Stabilization by such ligand-independent means is termed “constitutive receptor activation.”
• Serotonin Receptors
• Receptors for serotonin (5-hydroxytryptamine, 5-HT) are an important class of G protein coupled receptors. Serotonin is thought to play a role in processes related to learning and memory, sleep, thermoregulation, mood, motor activity, pain, sexual and aggressive behaviors, appetite, neurodegenerative regulation, and biological rhythms. Not surprisingly, serotonin is linked to pathophysiological conditions such as anxiety, depression, obsessive compulsive disorders, schizophrenia, suicide, autism, migraine, emesis, alcoholism, and neurodegenerative disorders. With respect to anti-psychotic treatment approaches focused on the serotonin receptors, these types of therapeutics can generally be divided into two classes, the “typical” and the “atypical.” Both have anti-psychotic effects, but the typicals also include concomitant motor-related side effects (extra pyramidal syndromes, e.g., lip-smacking, tongue darting, locomotor movement, etc). Such side effects are thought to be associated with the compounds interacting with other receptors, such as the human dopamine D2 receptor in the nigro-striatal pathway. Therefore, an atypical treatment is preferred. Haloperidol is considered a typical anti-psychotic, and clozapine is considered an atypical anti-psychotic.
• Serotonin receptors are divided into seven subfamilies, referred to as 5-HT1 through 5-HT7, inclusive. These subfamilies are further divided into subtypes. For example, the 5-HT2 subfamily is divided into three receptor subtypes: 5-HT_2A, 5-HT_2B, and 5-HT_2C. The human 5-HT_2Creceptor was first isolated and cloned in 1987, and the human 5-HT_2Areceptor was first isolated and cloned in 1990. These two receptors are thought to be the site of action of hallucinogenic drugs. Additionally, antagonists to the 5-HT_2Aand 5-HT_2Creceptors are believed to be useful in treating depression, anxiety, psychosis, and eating disorders.
• U.S. Pat. No. 4,985,352 describes the isolation, characterization, and expression of a functional cDNA clone encoding the entire human 5-HT_1creceptor (now known as the 5-HT_2Creceptor). U.S. Pat. Nos. 5,661,024 and 6,541,209 describe the isolation, characterization, and expression of a functional cDNA clone encoding the entire human 5-HT_2Areceptor.
• Mutations of the endogenous forms of the rat 5-HT_2Aand rat 5-HT_2Creceptors have been reported to lead to constitutive activation of these receptors (5-HT_2A: Casey, C. et al. (1996)Society for Neuroscience Abstracts,22:699.10, hereinafter “Casey”; 5-HT_2C: Herrick-Davis, K., and Teitler, M. (1996)Society for Neuroscience Abstracts,22:699.18, hereinafter “Herrick-Davis 1”; and Herrick-Davis, K. et al. (1997)J Neurochemistry69(3): 1138, hereinafter “Herrick-Davis-2”). Casey describes a mutation of the cysteine residue at position 322 of the rat 5-HT_2Areceptor to lysine (C322K), glutamine (C322Q), and arginine (C322R) which reportedly led to constitutive activation. Herrick-Davis 1 and Herrick-Davis 2 describe mutations of the serine residue at position 312 of the rat 5-HT_2Creceptor to phenylalanine (S312F) and lysine (S312K), which reportedly led to constitutive activation.
SUMMARY OF THE INVENTION
• One aspect of the present invention encompasses certain diaryl and arylheteroaryl urea derivatives as shown in Formula (I):

  

  
  or a pharmaceutically acceptable salt, hydrate or solvate thereof;
• wherein:
• i) R₁is aryl or heteroaryl each optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅each selected independently from the group consisting of C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, C_1-6alkylimino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, C_2-8dialkylsulfonamide, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-6haloalkylthio, heterocyclic, hydroxyl, thiol, nitro, phenoxy and phenyl, or two adjacent R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅together with the atoms to which they are attached form a C_5-7cycloalkyl group or heterocyclic group each optionally substituted with F, Cl, or Br; and wherein said C_2-6alkenyl, C_1-6alkyl, C_2-6alkynyl, C_1-6alkylamino, C_1-6alkylimino, C_2-8dialkylamino, heterocyclic, and phenyl are each optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-6haloalkylthio, hydroxyl, thiol and nitro;
• ii) R₂is selected from the group consisting of H, C_1-6alkyl, C_2-6alkenyl, C_2-6alkynyl and C_3-7cycloalkyl;
• iii) R₃is selected from the group consisting of H, C_2-6alkenyl, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, halogen, heteroaryl and phenyl; and wherein each of said C_2-6alkenyl, C_1-6alkyl, C_2-6alkynyl, C_1-6alkylsulfonamide, C_3-7cycloalkyl, heteroaryl and phenyl groups can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-5acyl, C_1-5acyloxy, C_2-6alkenyl, C_1-4alkoxy, C_1-8alkyl, C_1-6alkylamino, C_2-8dialkylamino, C_1-4alkylcarboxamide, C_2-6alkynyl, C_1-4alkylsulfonamide, C_1-4alkylsulfinyl, C_1-4alkylsulfonyl, C_1-4alkylthio, C_1-4alkylureyl, amino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-6cycloalkyl, C_2-6dialkylcarboxamide, halogen, C_1-4haloalkoxy, C_1-4haloalkyl, C_1-4haloalkylsulfinyl, C_1-4haloalkylsulfonyl, C_1-4haloalkylthio, hydroxyl, nitro and sulfonamide;
• iv) R₄is selected from the group consisting of H, C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, C_2-8dialkylsulfonamide, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-6haloalkylthio, hydroxyl, thiol, nitro and sulfonamide;
• v) R₅is selected from the group consisting of C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C-_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, C_2-8dialkylsulfonamide, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-6haloalkylthio, hydroxyl, thiol, nitro and sulfonamide, wherein said C_1-6alkoxy group can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-5acyl, C_1-5acyloxy, C_2-6alkenyl, C_1-4alkoxy, C_1-8alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, C_1-4alkylcarboxamide, C_2-6alkynyl, C_1-4alkylsulfonamide, C_1-4alkylsulfinyl, C_1-4alkylsulfonyl, C_1-4alkylthio, C_1-4alkylureyl, amino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-6cycloalkyl, C_2-6dialkylcarboxamide, halogen, C_1-4haloalkoxy, C_1-4haloalkyl, C_1-4haloalkylsulfinyl, C_1-4haloalkylsulfonyl, C_1-4haloalkylthio, hydroxyl, nitro and phenyl, and wherein said amino and phenyl are each optionally substituted with 1 to 5 further substituents selected from the group consisting of halogen and carbo-C_1-6-alkoxy;
• vi) R_6a, R_6b, and R_6care each independently selected from the group consisting of H, C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, C_2-8dialkylsulfonamide, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-6haloalkylthio, hydroxyl, thiol, nitro and sulfonamide;
• vii) R₇and R₈are independently H or C_1-8alkyl;
• viii) X is O or S; and
• ix) Q is C_1-3alkylene optionally substituted with 1 to 4 substituents selected from the group consisting of C_1-3alkyl, C_1-4alkoxy, carboxy, cyano, C_1-3haloalkyl, halogen and oxo; or Q is a bond.
• One aspect of the present invention encompasses pharmaceutical compositions comprising a compound of the present invention and a pharmaceutically acceptable carrier.
• One aspect of the present invention encompasses methods for modulating the activity of a 5HT_2Aserotonin receptor by contacting the receptor with a compound according to any of the embodiments described herein or a pharmaceutical composition.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of platelet aggregation in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of an indication selected from the group consisting of coronary artery disease, myocardial infarction, transient ischemic attack, angina, stroke, and atrial fibrillation in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of reducing the risk of blood clot formation in an angioplasty or coronary bypass surgery individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of reducing the risk of blood clot formation in an individual suffering from atrial fibrillation, comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of asthma in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of a symptom of asthma in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of agitation or a symptom thereof in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition. In some embodiments, the individual is a cognitively intact elderly individual.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of agitation or a symptom thereof in an individual suffering from dementia comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition. In some embodiments, the dementia is due to a degenerative disease of the nervous system. In some embodiments, the dementia is Alzheimers disease, Lewy Body, Parkinson's disease or Huntington's disease. In some embodiments, the dementia is due to diseases that affect blood vessels. In some embodiments, the dementia is due to stroke or multi-infarct dementia.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of an individual suffering from at least one of the indications selected from the group consisting of behavioral disorder, drug induced psychosis, excitative psychosis, Gilles de la Tourette's syndrome, manic disorder, organic or NOS psychosis, psychotic disorder, psychosis, acute schizophrenia, chronic schizophrenia and NOS schizophrenia comprising administering to said individual in need thereof a therapeutically effective amount of a dopamine D2 receptor antagonist and a compound according to any of the embodiments described herein or a pharmaceutical composition. In some embodiments, the dopamine D2 receptor antagonist is haloperidol.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of an individual with infantile autism, Huntington's chorea, or nausea and vomiting from chemotherapy or chemotherapeutic antibodies comprising administering to said individual in need thereof a therapeutically effective amount of a dopamine D2 receptor antagonist and a compound according to any of the embodiments described herein or a pharmaceutical composition. In some embodiments, the dopamine D2 receptor antagonist is haloperidol.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of schizophrenia in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a dopamine D2 receptor antagonist and a compound according to any of the embodiments described herein or a pharmaceutical composition. In some embodiments, the dopamine D2 receptor antagonist is haloperidol.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of alleviating negative symptoms of schizophrenia induced by the administration of haloperidol to an individual suffering from said schizophrenia, comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition. In some embodiments, the haloperidol and the compound or pharmaceutical composition are administered in separate dosage forms. In some embodiments, the haloperidol and the compound or pharmaceutical composition are administered in a single dosage form.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of a sleep disorder in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition. In some embodiments, the sleep disorder comprises a fragmented sleep architecture. In some embodiments, the effective amount of a compound according to any of the embodiments described herein, or a pharmaceutical composition described herein, promotes sleep consolidation. In some embodiments, the effective amount of a compound according to any of the embodiments described herein, or a pharmaceutical composition described herein, increases delta power.
• In some embodiments, the sleep disorder is a dyssomnia. In some embodiments, the dyssomnia is selected from the group consisting of psychophysiological insomnia, sleep state misperception, idiopathic insomnia, obstructive sleep apnea syndrome, central sleep apnea syndrome, central alveolar hypoventilation syndrome, periodic limb movement disorder, restless leg syndrome, inadequate sleep hygiene, environmental sleep disorder, altitude insomnia, adjustment sleep disorder, insufficient sleep syndrome, limit-setting sleep disorder, sleep-onset association disorder, nocturnal eating or drinking syndrome, hypnotic dependent sleep disorder, stimulant-dependent sleep disorder, alcohol-dependent sleep disorder, toxin-induced sleep disorder, time zone change (et lag) syndrome, shift work sleep disorder, irregular sleep-wake pattern, delayed sleep phase syndrome, advanced sleep phase syndrome and non-24-hour sleep-wake disorder.
• In some embodiments, the sleep disorder is a parasomnia. In some embodiments, the parasomnia is selected from the group consisting of confusional arousals, sleepwalking and sleep terrors, rhythmic movement disorder, sleep starts, sleep talking and nocturnal leg cramps.
• In some embodiments, the sleep disorder is associated with a medical or psychiatric disorder. In some embodiments, the medical or psychiatric disorder is selected from the group consisting of psychoses, mood disorders, anxiety disorders, panic disorders, alcoholism, cerebral degenerative disorders, dementia, parkinsonism, fatal familial insomnia, sleep-related epilepsy, electrical status epilepticus of sleep, sleep-related headaches, sleeping sickness, nocturnal cardiac ischemia, chronic obstructive pulmonary disease, sleep-related asthma, sleep-related gastroesophageal reflux, peptic ulcer disease, fibrositis syndrome, osteoarthritis, rheumatoid arthritis, fibromyalgia and post-surgical sleep disorder.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of a diabetic-related disorder in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition.
• In some embodiments, the diabetic-related disorder is diabetic peripheral neuropathy.
• In some embodiments, the diabetic-related disorder is diabetic nephropathy.
• In some embodiments, the diabetic-related disorder is diabetic retinopathy.
• One aspect of the present invention encompasses processes for preparing a composition comprising admixing a compound according any embodiments described herein and pharmaceutically acceptable carrier.
• One aspect of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is platelet aggregation.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is selected from the group consisting of coronary artery disease, myocardial infarction, transient ischemic attack, angina, stroke, and atrial fibrillation.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is a blood clot formation in an angioplasty or coronary bypass surgery individual.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is a blood clot formation in an individual suffering from atrial fibrillation.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is asthma.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is a symptom of asthma.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is agitation or a symptom thereof in an individual. In some embodiments the individual is a cognitively intact elderly individual.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is agitation or a symptom thereof in an individual suffering from dementia. In some embodiments the dementia is due to a degenerative disease of the nervous system. In some embodiment the dementia is Alzheimers disease, Lewy Body, Parkinson's disease, or Huntington's disease. In some embodiments the dementia is due to diseases that affect blood vessels. In some embodiments the dementia is due to stroke or multi-infract dementia.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder further comprising a dopamine D2 receptor antagonist wherein the disorder is selected from the group consisting of a behavioral disorder, drug induced psychosis, excitative psychosis, Gilles de la Tourette's syndrome, manic disorder, organic or NOS psychosis, psychotic disorder, psychosis, acute schizophrenia, chronic schizophrenia and NOS schizophrenia. In some embodiments the dopamine D2 receptor antagonist is haloperidol.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder further comprising a dopamine D2 receptor antagonist wherein the disorder is infantile autism, Huntington's chorea, or nausea and vomiting from chemotherapy or chemotherapeutic antibodies. In some embodiments the dopamine D2 receptor antagonist is haloperidol.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder further comprising a dopamine D2 receptor antagonist wherein the disorder is schizophrenia. In some embodiments the dopamine D2 receptor antagonist is haloperidol.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is a negative symptom or symptoms of schizophrenia induced by the administration of haloperidol.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the haloperidol and the compound or pharmaceutical composition are administered in separate dosage forms.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the haloperidol and the compound or pharmaceutical composition are administered in a single dosage form.
• One aspect of the present invention are compounds according to any of the embodiments described herein for use in a method of treatment of the human or animal body by therapy.
• One aspect of the present invention are compounds according to any of the embodiments described herein for use in a method for the prophylaxis or treatment of a 5HT_2Amediated disorder, as described herein, in the human or animal body by therapy.
• One aspect of the present invention are compounds according to any of the embodiments described herein for use in a method for the prophylaxis or treatment of a sleep disorder, as described herein, in the human or animal body by therapy.
• One aspect of the present invention are compounds according to any of the embodiments described herein for use in a method for the prophylaxis or treatment of platelet aggregation in the human or animal body by therapy.
• These and other aspects of the invention disclosed herein will be set forth in greater detail as the patent disclosure proceeds.
BRIEF DESCRIPTION OF THE DRAWINGS
• In the following figures, bold typeface indicates the location of the mutation in the non-endogenous, constitutively activated receptor relative to the corresponding endogenous receptor.
• FIG. 1 shows a generalized structure of a G protein-coupled receptor with the numbers assigned to the transmembrane helices, the intracellular loops, and the extracellular loops.
• FIG. 2 schematically shows the active and inactive states for a typical G protein-coupled receptor and the linkage of the active state to the second messenger transduction pathway.
• FIG. 3aprovides the nucleic acid sequence of the endogenous human 5-HT_2Areceptor (SEQ.ID.NO: 21).
• FIG. 3bprovides the corresponding amino acid sequence of the endogenous human 5-HT_2Areceptor (SEQ.ID.NO: 22).
• FIG. 4aprovides the nucleic acid sequence of the endogenous human 5-HT_2Creceptor (SEQ.ID.NO: 23).
• FIG. 4bprovides the corresponding amino acid sequence of the endogenous human 5-HT_2Creceptor (SEQ.ID.NO: 24).
• FIG. 5aprovides the nucleic acid sequence of a constitutively active form of the human 5-HT_2Creceptor (“AP-1 cDNA”-SEQ.ID.NO: 25).
• FIG. 5bprovides the corresponding amino acid sequence of the AP-1 cDNA (“AP-1”-SEQ.ID.NO: 26).
• FIG. 6aprovides the nucleic acid sequence of a constitutively active form of the human 5-HT_2Areceptor whereby the IC3 portion and the cytoplasmic-tail portion of the endogenous 5-HT_2Areceptor have been replaced with the IC3 portion and the cytoplasmic-tail portion of the human 5-HT_2Creceptor (“AP-3 cDNA?-SEQ.ID.NO: 27).
• FIG. 6bprovides the corresponding amino acid sequence of the AP-3 cDNA (“AP-3” SEQ.ID.NO: 28).
• FIG. 6cprovides a schematic representation of AP-3, where the dashed-lines represent the portion obtained from the human 5-HT_2Creceptor.
• FIG. 7aprovides the nucleic acid sequence of a constitutively active form of the human 5-HT_2Areceptor whereby (1) the region between the proline of TM5 and the proline of TM6 of the endogenous human 5-HT_2Areceptor has been replaced with the corresponding region of the human 5-HT_2Creceptor (including a S310K point mutation); and (2) the cytoplasmic-tail portion of the endogenous 5-HT_2Areceptor has been replaced with the cytoplasmic-tail portion of the endogenous human 5-HT_2Creceptor (“AP-4 cDNA”- SEQ.ID.NO:29).
• FIG. 7bprovides the corresponding amino acid sequence of the AP-4 cDNA (“AP-4”-SEQ.ID.NO: 30).
• FIG. 7cprovides a schematic representation of the mutated 5-HT_2Areceptor ofFIG. 7bwhere the dashed-lines represent the portion obtained from the human 5-HT_2Creceptor.
• FIG. 8 is a representation of the preferred vector, pCMV, used herein.
• FIG. 9 is a diagram illustrating (1) enhanced (³⁵S)GTPγS binding to membranes prepared from COS cells expressing the endogenous human 5-HT_2Creceptor in response to serotonin, and (2) inhibition by mianserin using wheatgerm agglutinin scintillation proximity beads. The concentration of (³⁵S)GTPγS was held constant at 0.3 nM, and the concentration of GDP was held at 1 μM. The concentration of the membrane protein was 12.5 μg.
• FIG. 10 is a diagram showing serotonin stimulation of (³⁵S)GTPγS binding to membranes expressing AP-1 receptors in 293T cells and the inhibition by 30 μM mianserin on Wallac™ scintistrips.
• FIG. 11 is a diagram showing the effects of protein concentration on (³⁵S)GTPγS binding in membranes prepared from 293T cells transfected with the endogenous human 5-HT_2Creceptors and AP-1 receptors compared to cells transfected with the control vector (pCMV) alone in the absence (A) and presence (B) of 10 μM serotonin. The radiolabeled concentration of (³⁵S)GTPγS was held constant at 0.3 nM, and the GDP concentration was held constant at 1 μM. The assay was performed on 96-well format on Wallac™ scintistrips.
• FIG. 12 provides bar-graph comparisons of inositol tris-phosphate (“IP3”) production between the endogenous human 5HT_2Areceptor and AP-2, a mutated form of the receptor.
• FIG. 13 provides bar-graph comparisons of inositol tris-phosphate (“IP3”) production between the endogenous human 5HT_2Areceptor and AP-4, a mutated form of the receptor.
• FIG. 14 provides bar graph comparisons of IP3 production between the endogenous human 5-HT_2Areceptor and AP-3, a mutated form of the receptor.
• FIG. 15 provides bar-graph comparisons of IP3 production between the endogenous human 5-HT_2Creceptor and AP-1.
• FIGS. 16A, 16B and16C shows a grey-scale reproduction of representative autoradiograms demonstrating displacement of¹²⁵I-LSD from brain sections by spiperone and an early lead compound identified by the Inventors, referred to herein as S-1610 and has the following name: [3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-phenyl]-carbamic acid 4-methoxy-phenyl ester.
• FIG. 17 shows the general synthetic scheme for the preparation of intermediate compounds of the present invention.FIG. 17 shows a general coupling method between a pyrazole boronic acid and an aryl triflate, it is understood that similar coupling methods can be used wherein the triflate is a halide, such as, I, Br or Cl.
• FIG. 18 shows the general synthetic scheme for the preparation of intermediate compounds of the present invention.
• FIG. 19 shows the general synthetic scheme for the preparation of intermediate compounds useful in the preparation of compounds of the present invention.
• FIG. 20 shows the general synthetic scheme for the preparation of intermediate compounds useful in the preparation of compounds of the present invention.
• FIG. 21 shows the general synthetic scheme for the preparation of compounds of the present invention.FIG. 21 shows a general coupling method between a phenyl amine, as described in previous figures, and an isocyanate or thioisocyanate to give ureas and thioureas respectively.
• FIG. 22 shows the effect ofCompound 1 on DOI-induced hypolocomotion in rats.
• FIG. 23 shows the effect ofCompound 26 on DOI-induced hypolocomotion in rats.
• FIG. 24 shows the experimental design of 5HT2A occupancy studies in monkeys.
• FIG. 25 shows PET scan images ofmonkey brains 8 or 24 hours after treatment withCompound 1 compared to a baseline PET scan (transaxial view).
• FIG. 26 shows PET scan images ofmonkey brains 8 or 24 hours after treatment withCompound 1 compared to a baseline PET scan (sagital view).
• FIG. 27 shows tabulated data for percent occupancy of 5HT2A receptors byCompound 1 in monkeys.
• FIG. 28 shows the effect in rats ofCompound 1 andCompound 26 on sleep and wakefulness, as measured by delta power, compared to zolpidem.
• FIG. 29 shows the general synthetic scheme for the preparation of intermediate compounds of the present invention.FIG. 29 shows a general coupling method between a pyrazole boronic acid and an aryl triflate, it is understood that similar coupling methods known in the art can also be used, and a halide, such as, I, Br or Cl, can be used in place of the triflate.
• FIG. 30 shows the general synthetic scheme for the preparation of intermediate compounds of the present invention.FIG. 30 illustrates the formation of pyrazoles from a variety of substituted chromen-4-ones. Also shown are alkylation and “Mitsunobu-like” examples for modifying the phenol, and illustrative reductions of the nitro to amine.
• FIG. 31 shows the general synthetic scheme for the preparation of intermediate compounds useful in the preparation of compounds of the present invention.FIG. 31 illustrates the alkylation and “Mitsunobu-like” examples for modifying the phenol. It is understood that a variety of halo-alkyls and alcohols can be used in these reactions. Some representative alcohols are, 2-dimethylamino ethanol, 3-dimethylamino propanol, and the like.
• FIG. 32 shows the general synthetic scheme for the preparation of intermediate compounds useful in the preparation of compounds of the present invention.FIG. 32 illustrates general methods for introducing a variety of halogens into compounds of the invention. It is understood that these halogenation reaction can also be conducted later in the synthesis, for example as the last step.
• FIG. 33 shows the general synthetic scheme for the preparation of compounds of the present invention.FIG. 33 shows a general coupling method between a phenyl amine, as described in previous figures, and isocyanates or thioisocyanates to give ureas and thioureas respectively.FIG. 33 also shows the general method for introducing R₇and R₈into compounds of the invention.
• FIG. 34 shows an alternate general synthetic scheme for the preparation of compounds of the present invention.
DEFINITIONS
• The scientific literature that has evolved around receptors has adopted a number of terms to refer to ligands having various effects on receptors. For clarity and consistency, the following definitions will be used throughout this patent document.
• AGONISTS shall mean moieties that interact and activate the receptor, such as the 5-HT_2Areceptor, and initiates a physiological or pharmacological response characteristic of that receptor. For example, when moieties activate the intracellular response upon binding to the receptor, or enhance GTP binding to membranes.
• AMINO ACID ABBREVIATIONS used herein are set out in TABLE 1:

  	TABLE 1
  	ALANINE	ALA	A
  	ARGININE	ARG	R
  	ASPARAGINE	ASN	N
  	ASPARTIC ACID	ASP	D
  	CYSTEINE	CYS	C
  	GLUTAMIC ACID	GLU	E
  	GLUTAMINE	GLN	Q
  	GLYCINE	GLY	G
  	HISTIDINE	HIS	H
  	ISOLEUCINE	ILE	I
  	LEUCINE	LEU	L
  	LYSINE	LYS	K
  	METHIONINE	MET	M
  	PHENYLALANINE	PHE	F
  	PROLINE	PRO	P
  	SERINE	SER	S
  	THREONINE	THR	T
  	TRYPTOPHAN	TRP	W
  	TYROSINE	TYR	Y
  	VALINE	VAL	V

• The term ANTAGONISTS is intended to mean moieties that competitively bind to the receptor at the same site as agonists (for example, the endogenous ligand), but which do not activate the intracellular response initiated by the active form of the receptor, and can thereby inhibit the intracellular responses by agonists or partial agonists. Antagonists do not diminish the baseline intracellular response in the absence of an agonist or partial agonist.
• Chemical Group, Moiety or Radical:
• The term “C_1-6acyl” denotes a C_1-6alkyl radical attached to a carbonyl wherein the definition of alkyl has the same definition as described herein; some examples include but not limited to, acetyl, propionyl, n-butanoyl, iso-butanoyl, sec-butanoyl, t-butanoyl (i.e., pivaloyl), pentanoyl and the like.
• The term “C_1-6acyloxy” denotes an acyl radical attached to an oxygen atom wherein acyl has the same definition has described herein; some examples include but not limited to acetyloxy, propionyloxy, butanoyloxy, iso-butanoyloxy, sec-butanoyloxy, t-butanoyloxy and the like.
• The term “C_2-6alkenyl” denotes a radical containing 2 to 6 carbons wherein at least one carbon-carbon double bond is present, some embodiments are 2 to 4 carbons, some embodiments are 2 to 3 carbons, and some embodiments have 2 carbons. Both E and Z isomers are embraced by the term “alkenyl.” Furthermore, the term “alkenyl” includes di- and tri-alkenyls. Accordingly, if more than one double bond is present then the bonds may be all E or Z or a mixtures of E and Z. Examples of an alkenyl include vinyl, allyl, 2-butenyl, 3-butenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 2-hexenyl, 3-hexenyl, 4-hexenyl, 5-hexanyl, 2,4-hexadienyl and the like.
• The term “C_1-6alkoxy” as used herein denotes a radical alkyl, as defined herein, attached directly to an oxygen atom. Examples include methoxy, ethoxy, n-propoxy, iso-propoxy, n-butoxy, t-butoxy, iso-butoxy, sec-butoxy and the like.
• The term “C_1-8alkyl” denotes a straight or branched carbon radical containing 1 to 8 carbons, some embodiments are 1 to 6 carbons, some embodiments are 1 to 4 carbons, some embodiments are 1 to 3 carbons, and some embodiments are 1 or 2 carbons. Examples of an alkyl include, but not limited to, methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, iso-butyl, 1-butyl, pentyl, iso-pentyl, t-pentyl, neo-pentyl, 1-methylbutyl [i.e., —CH(CH₃)CH₂CH₂CH₃], 2-methylbutyl [i.e., —CH₂CH(CH₃)CH₂CH₃], n-hexyl and the like.
• The term “C_1-6alkylcarboxamido” or “C_1-6alkylcarboxamide” denotes a single C_1-6alkyl group attached to the nitrogen of an amide group, wherein alkyl has the same definition as found herein. The C_1-6alkylcarboxamido may be represented by the following:

  

  
  Examples include, but not limited to, N-methylcarboxamide, N-ethylcarboxamide, N-n-propylcarboxamide, N-iso-propylcarboxamide, N-n-butylcarboxamide, N-sec-butylcarboxamide, N-iso-butylcarboxamide, N-t-butylcarboxamide and the like.
• The term “C_1-3alkylene” refers to a C_1-3divalent straight carbon group. In some embodiments C_1-3alkylene refers to, for example, —CH₂—, —CH₂CH₂—, —CH₂CH₂CH₂—, and the like. In some embodiments, C_1-3alkylene refers to —CH—, —CHCH₂—, —CHCH₂CH₂—, and the like wherein these examples relate generally to the variable or claim element “Q”.
• The term “C_1-6alkylimino” denotes a C_1-6alkyl radical attached directly to the carbon of the —C(═NH)— group wherein the definition of alkyl has the same definition as described herein; some examples include but not limited to, 1-imino-ethyl [i.e., —C(═NH)CH₃], 1-imino-propyl [i.e., —C(═NH)CH₂CH₃], 1-imino-2-methyl-propyl [i.e., —C(═NH)CH(CH₃)₂], and the like.
• The term “C_1-6alkylsulfinyl” denotes a C_1-6alkyl radical attached to a sulfoxide radical of the formula: —S(O)— wherein the alkyl radical has the same definition as described herein. Examples include, but not limited to, methylsulfinyl, ethylsulfinyl, n-propylsulfinyl, iso-propylsulfinyl, n-butylsulfinyl, sec-butylsulfinyl, iso-butylsulfinyl, t-butylsulfinyl, and the like.
• The term “C_1-6alkylsulfonamide” refers to the groups

  

  
  wherein C₁4 alkyl has the same definition as described herein.
• The term “C_1-6alkylsulfonyl” denotes a C_1-6alkyl radical attached to a sulfone radical of the formula: —S(O)₂— wherein the alkyl radical has the same definition as described herein. Examples include, but not limited to, methylsulfonyl, ethylsulfonyl, n-propylsulfonyl, iso-propylsulfonyl, n-butylsulfonyl, sec-butylsulfonyl, iso-butylsulfonyl, t-butylsulfonyl, and the like.
• The term “C_1-6alkylthio” denotes a C_1-6alkyl radical attached to a sulfide of the formula: —S— wherein the alkyl radical has the same definition as described herein. Examples include, but not limited to, methylsulfanyl (i.e., CH₃S—), ethylsulfanyl, n-propylsulfanyl, iso-propylsulfanyl, n-butylsulfanyl, sec-butylsulfanyl, iso-butylsulfanyl, t-butylsulfanyl, and the like.
• The term “C_1-6alkylthiocarboxamide” denotes a thioamide of the following formulae:

  

  
  wherein C_1-6alkyl has the same definition as described herein.
• The term “C_1-6alkylthioureyl” denotes the group of the formula: —NC(S)N— wherein one are both of the nitrogens are substituted with the same or different C_1-6alkyl groups and alkyl has the same definition as described herein. Examples of an alkylthioureyl include, but not limited to, CH₃NHC(S)NH—, NH₂C(S)NCH₃—, (CH₃)₂N(S)NH—, (CH₃)₂N(S)NH—, (CH₃)₂N(S)NCH₃—, CH₃CH₂NHC(S)NH—, CH₃CH₂NHC(S)NCH₃—, and the like.
• The term “C_1-6alkylureyl” denotes the group of the formula: —NC(O)N—wherein one are both of the nitrogens are substituted with the same or different C_1-6alkyl group wherein alkyl has the same definition as described herein. Examples of an alkylureyl include, but not limited to, CH₃NHC(O)NH—, NH₂C(O)NCH₃—, (CH₃)₂NC(O)NH—, (CH₃)₂NC(O)NH—, (CH₃)₂NC(O)NCH₃—, CH₃CH_xNHC(O)NH—, CH₃CH₂NHC(O)NCH₃—, and the like.
• The term “C_2-6alkynyl” denotes a radical containing 2 to 6 carbons and at least one carbon-carbon triple bond, some embodiments are 2 to 4 carbons, some embodiments are 2 to 3 carbons, and some embodiments have 2 carbons. Examples of an alkynyl include, but not limited to, ethynyl, 1-propynyl, 2-propynyl, 1-butynyl, 2-butynyl, 3-butynyl, 1-pentynyl, 2-pentynyl, 3-pentynyl, 4-pentynyl, 1-hexynyl, 2-hexynyl, 3-hexynyl, 4-hexynyl, 5-hexynyl and the like. The term “alkynyl” includes di- and tri-ynes.
• The term “amino” denotes the group —NH₂.
• The term “C_1-6alkylamino” denotes one alkyl radical attached to an amino radical wherein the alkyl radical has the same meaning as described herein. Some examples include, but not limited to, methylamino, ethylamino, n-propylamino, iso-propylamino, n-butylamino, sec-butylamino, iso-butylamino, t-butylamino, and the like. Some embodiments are “C_1-2alkylamino.”
• The term “aryl” denotes an aromatic ring radical containing 6 to 10 ring carbons. Examples include phenyl and naphthyl.
• The term “arylalkyl” defines a C₁-C₄alkylene, such as —CH₂—, —CH₂CH₂— and the like, which is further substituted with an aryl group. Examples of an “arylalkyl” include benzyl, phenethylene and the like.
• The term “arylcarboxamido” denotes a single aryl group attached to the nitrogen of an amide group, wherein aryl has the same definition as found herein. The example is N-phenylcarboxamide.
• The term “arylureyl” denotes the group —NC(O)N— where one of the nitrogens are substituted with an aryl.
• The term “benzyl” denotes the group —CH₂C₆H₅.
• The term “carbo-C_1-6-alkoxy” refers to a C_1-6alkyl ester of a carboxylic acid, wherein the alkyl group is as defined herein. Examples include, but not limited to, carbomethoxy, carboethoxy, carbopropoxy, carboisopropoxy, carbobutoxy, carbo-sec-butoxy, carbo-iso-butoxy, carbo-t-butoxy, carbo-n-pentoxy, carbo-iso-pentoxy, carbo-t-pentoxy, carbo-neo-pentoxy, carbo-n-hexyloxy, and the like.
• The term “carboxamide” refers to the group —CONH₂.
• The term “carboxy” or “carboxyl” denotes the group —CO₂H; also referred to as a carboxylic acid group.
• The term “cyano” denotes the group —CN.
• The term “C_4-7cycloalkenyl” denotes a non-aromatic ring radical containing 4 to 7 ring carbons and at least one double bond; some embodiments contain 4 to 6 carbons; some embodiments contain 4 to 5 carbons; some embodiments contain 4 carbons. Examples include cyclobutenyl, cyclopentenyl, cyclopentenyl, cyclohexenyl, and the like.
• The term “C_3-7cycloalkyl” denotes a saturated ring radical containing 3 to 7 carbons; some embodiments contain 3 to 6 carbons; some embodiments contain 3 to 5 carbons; some embodiments contain 5 to 7 carbons; some embodiments contain 3 to 4 carbons. Examples include cyclopropyl, cyclobutyl, cyclopentyl, cyclopenyl, cyclohexyl, cycloheptyl and the like.
• The term “C_2-8dialkylamino” denotes an amino substituted with two of the same or different C_1-4alkyl radicals wherein alkyl radical has the same definition as described herein. Some examples include, but not limited to, dimethylamino, methylethylamino, diethylamino, methylpropylamino, methylisopropylamino, ethylpropylamino, ethylisopropylamino, dipropylamino, propylisopropylamino and the like. Some embodiments are “C_2-4dialkylamino.”
• The term “C_2-8dialkylcarboxamido” or “C_2-8dialkylcarboxamide” denotes two alkyl radicals, that are the same or different, attached to an amide group, wherein alkyl has the same definition as described herein. A C_2-8dialkylcarboxamido may be represented by the following groups:

  

  
  wherein C_1-4has the same definition as described herein. Examples of a dialkylcarboxamide include, but not limited to, N,N-dimethylcarboxamide, N-methyl-N-ethylcarboxamide, N,N-diethylcarboxamide, N-methyl-N-isopropylcarboxamide, and the like.
• The term “C_2-8dialkylsulfonamide” refers to one of the following groups shown below:

  
• wherein C_1-4has the same definition as described herein, for example but not limited to, methyl, ethyl, n-propyl, isopropyl, and the like.
  The term “C_2-8dialkylthiocarboxamido” or “C_2-8dialkylthiocarbox-amide” denotes two alkyl radicals, that are the same or different, attached to a thioamide group, wherein alkyl has the same definition as described herein. A C_2-8dialkyithiocarboxamido or C_2-8dialkyithiocarboxamnide may be represented by the following groups:

  

  
  Examples of a dialkyithiocarboxamide include, but not limited to, NNW-dimethylthiocarboxamide, N-methyl-N-ethylthiocarboxamide and the like.
• The term “ethynylene” refers to the carbon-carbon triple bond group as represented below:

  
• The term “formyl” refers to the group —CHO.
• The term “C_1-6haloalkoxy” denotes a haloalkyl, as defined herein, which is directly attached to an oxygen atom. Examples include, but not limited to, difluoromethoxy, trifluoromethoxy, 2,2,2-trifluoroethoxy, pentafluoroethoxy and the like.
• The term “C_1-6haloalkyl” denotes an C_1-6alkyl group, defined herein, wherein the alkyl is substituted with one halogen up to fully substituted and a fully substituted C_1-6haloalkyl can be represented by the formula C_nL_2n+1wherein L is a halogen and “n” is 1, 2, 3 or 4; when more than one halogen is present then they may be the same or different and selected from the group consisting of F, Cl, Br and I, preferably F. Examples Of C_1-4haloalkyl groups include, but not limited to, fluoromethyl, difluoromethyl, trifluoromethyl, chlorodifluoromethyl, 2,2,2-trifluoroethyl, pentafluoroethyl and the like.
• The term “C_1-6haloalkylcarboxamide” denotes an alkylcarboxamide group, defined herein, wherein the alkyl is substituted with one halogen up to fully substituted represented by the formula C_nL_2n+1wherein L is a halogen and “n” is 1, 2, 3 or 4. When more than one halogen is present they may be the same or different and selected from the group consisting of F, Cl, Br and I, preferably F.
• The term “C_1-6haloalkylsulfinyl” denotes a haloalkyl radical attached to a sulfoxide group of the formula: —S(O)— wherein the haloalkyl radical has the same definition as described herein. Examples include, but not limited to, trifluoromethylsulfinyl, 2,2,2-trifluoroethylsulfinyl, 2,2-difluoroethylsulfinyl and the like.
• The term “C_1-6haloalkylsulfonyl” denotes a haloalkyl radical attached to a sulfone group of the formula: —S(O)₂— wherein haloalkyl has the same definition as described herein. Examples include, but not limited to, trifluoromethylsulfonyl, 2,2,2-trifluoroethylsulfonyl, 2,2-difluoroethylsulfonyl and the like.
• The term “C_1-6haloalkylthio” denotes a haloalkyl radical directly attached to a sulfur wherein the haloalkyl has the same meaning as described herein. Examples include, but not limited to, trifluoromethylthio (i.e., CF₃S—, also referred to as trifluoromethylsulfanyl), 1,1-difluoroethylthio, 2,2,2-trifluoroethylthio and the like.
• The term “halogen” or “halo” denotes to a fluoro, chloro, bromo or iodo group. The term “heteroaryl” denotes an aromatic ring system that may be a single ring, two fused rings or three fused rings wherein at least one ring carbon is replaced with a heteroatom selected from, but not limited to, the group consisting of O, S and N wherein the N can be optionally substituted with H, C_1-4acyl or C_1-4alkyl. Examples of heteroaryl groups include, but not limited to, pyridyl, benzofuranyl, pyrazinyl, pyridazinyl, pyrimidinyl, triazinyl, quinoline, benzoxazole, benzothiazole, 1H-benzimidazole, isoquinoline, quinazoline, quinoxaline and the like. In some embodiments, the heteroaryl atom is O, S, NH, examples include, but not limited to, pyrrole, indole, and the like. Other examples include, but not limited to, those in TABLE 2, TABLE 3, and the like.
• The term “heterocyclic” denotes a non-aromatic carbon ring (i.e., C_3-7cycloalkyl or C_4-7cycloalkenyl as defined herein) wherein one, two or three ring carbons are replaced by a heteroatom selected from, but not limited to, the group consisting of O, S, N, wherein the N can be optionally substituted with H, C_1-4acyl or C_1-4alkyl, and ring carbon atoms optionally substituted with oxo or a thiooxo thus forming a carbonyl or thiocarbonyl group. The heterocyclic group is a 3-, 4-, 5-, 6- or 7-membered containing ring. Examples of a heterocyclic group include but not limited to aziridin-1-yl, aziridin-2-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, piperidin-1-yl, piperidin-4-yl, morpholin-4-yl, piperzin-1-yl, piperzin-4-yl, pyrrolidin-1-yl, pyrrolidin-3-yl, [1,3]-dioxolan-2-yl and the like.
• The term “heterocycliccarboxamido” denotes a heterocyclic group, as defined herein, with a ring nitrogen where the ring nitrogen is bonded directly to the carbonyl forming an amide. Examples include, but not limited to,

  
• The term “heterocyclicsulfonyl” denotes a heterocyclic group, as defined herein, with a ring nitrogen where the ring nitrogen is bonded directly to an —SO₂-group forming an sulfonamide. Examples include, but not limited to,

  

  
  and the like.
• The term “hydroxyl” refers to the group —OH.
• The term “hydroxylamino” refers to the group —NHOH.
• The term “nitro” refers to the group —NO₂.
• The term “C_4-7oxo-cycloalkyl” refers to a C_4-7cycloalkyl, as defined herein, wherein one of the ring carbons is replaced with a carbonyl. Examples of C_4-7oxo-cycloalkyl include, but are not limited to, 2-oxo-cyclobutyl, 3-oxo-cyclobutyl, 3-oxo-cyclopentyl, 4-oxo-cyclohexyl, and the like and represented by the following structures respectively:

  
• The term “perfluoroalkyl” denotes the group of the formula —C_nF_2n+1; stated differently, a perfluoroalkyl is an alkyl as defined herein wherein the alkyl is fully substituted with fluorine atoms and is therefore considered a subset of haloalkyl. Examples of perfluoroalkyls include CF₃, CF₂CF₃, CF₂CF₂CF₃, CF(CF₃)₂, CF₂CF₂CF₂CF₃, CF₂CF(CF₃)₂, CF(CF₃)CF₂CF₃and the like.
• The term “phenoxy” refers to the group C₆H₅O—.
• The term “phenyl” refers to the group C₆H₅—.
• The term“sulfonic acid” refers to the group —SO₃H.
• The term “thiol” denotes the group —SH.
• CODON shall mean a grouping of three nucleotides (or equivalents to nucleotides) which generally comprise a nucleoside [adenosine (A), guanosine (G), cytidine (C), uridine (U) and thymidine (T)] coupled to a phosphate group and which, when translated, encodes an amino acid.
• COMPOSITION shall mean a material comprising at least two compounds or two components; for example, and without limitation, a Pharmaceutical Composition is a Composition comprising a compound of the present invention and a pharmaceutically acceptable carrier.
• COMPOUND EFFICACY shall mean a measurement of the ability of a compound to inhibit or stimulate receptor functionality, as opposed to receptor binding affinity.
• CONSTITUTIVELY ACTIVATED RECEPTOR shall mean a receptor subject to constitutive receptor activation.
• CONSTITUTIVE RECEPTOR ACTIVATION shall mean stabilization of a receptor in the active state by means other than binding of the receptor with its endogenous ligand or a chemical equivalent thereof.
• CONTACT or CONTACTING shall mean bringing the indicated moieties together, whether in an in vitro system or an in vivo system. Thus, “contacting” a 5-HT_2Areceptor with a compound of the invention includes the administration of a compound of the present invention to an individual, preferably a human, having a 5-HT_2Areceptor, as well as, for example, introducing a compound of the invention into a sample containing a cellular or more purified preparation containing a 5-HT_2Areceptor.
• ENDOGENOUS shall mean a material that a mammal naturally produces. ENDOGENOUS in reference to, for example and not limitation, the term “receptor” shall mean that which is naturally produced by a mammal (for example, and not limitation, a human) or a virus.
• In contrast, the term NON-ENDOGENOUS in this context shall mean that which is not naturally produced by a mammal (for example, and not limitation, a human) or a virus. For example, and not limitation, a receptor which is not constitutively active in its endogenous form, but when manipulated becomes constitutively active, is most preferably referred to herein as a “non-endogenous, constitutively activated receptor.” Both terms can be utilized to describe both “in vivo” and “in vitro” systems. For example, and not a limitation, in a screening approach, the endogenous or non-endogenous receptor may be in reference to an in vitro screening system. As a further example and not limitation, where the genome of a mammal has been manipulated to include a non-endogenous constitutively activated receptor, screening of a candidate compound by means of an in vivo system is viable.
• IN NEED OF PROPHYLAXIS OR TREATMENT as used herein refers to a judgment made by a caregiver (e.g. physician, nurse, nurse practitioner, etc. in the case of humans; veterinarian in the case of animals, including non-human mammals) that an individual or animal requires or will benefit from prophylaxis or treatment. This judgment is made based on a variety of factors that are in the realm of a caregiver's expertise, but that includes the knowledge that the individual or animal is ill, or will be ill, as the result of a disease, condition or disorder that is treatable by the compounds of the invention. In general, “in need of prophylaxis” refers to the judgment made by the caregiver that the individual will become ill. In this context, the compounds of the invention are used in a protective or preventive manner. However, “in need of treatment” refers to the judgment of the caregiver that the individual is already ill, therefore, the compounds of the present invention are used to alleviate, inhibit or ameliorate the disease, condition or disorder.
• INDIVIDUAL as used herein refers to any animal, including mammals, preferably mice, rats, other rodents, rabbits, dogs, cats, swine, cattle, sheep, horses, or primates, and most preferably humans.
• INHIBIT or INHIBITING, in relationship to the term “response” shall mean that a response is decreased or prevented in the presence of a compound as opposed to in the absence of the compound.
• INVERSE AGONISTS shall mean moieties that bind the endogenous form of the receptor or to the constitutively activated form of the receptor, and which inhibit the baseline intracellular response initiated by the active form of the receptor below the normal base level of activity which is observed in the absence of agonists or partial agonists, or decrease GTP binding to membranes. Preferably, the baseline intracellular response is inhibited in the presence of the inverse agonist by at least 30%, more preferably by at least 50%, and most preferably by at least 75%, as compared with the baseline response in the absence of the inverse agonist.
• LIGAND shall mean an endogenous, naturally occurring molecule specific for an endogenous, naturally occurring receptor.
• As used herein, the terms MODULATE or MODULATING shall mean to refer to an increase or decrease in the amount, quality, response or effect of a particular activity, function or molecule.
• PHARMACEUTICAL COMPOSITION shall mean a composition comprising at least one active ingredient; including but not limited to, salts, solvates and hydrates of compounds of Formula (I); whereby the composition is amenable to investigation for a specified, efficacious outcome in a mammal (for example, without limitation, a human). Those of ordinary skill in the art will understand and appreciate the techniques appropriate for determining whether an active ingredient has a desired efficacious outcome based upon the needs of the artisan.
• THERAPEUTICALLY EFFECTIVE AMOUNT as used herein refers to the amount of active compound or pharmaceutical agent that elicits the biological or medicinal response in a tissue, system, animal, individual or human that is being sought by a researcher, veterinarian, medical doctor or other clinician, which includes one or more of the following:
• (1) Preventing the disease; for example, preventing a disease, condition or disorder in an individual that may be predisposed to the disease, condition or disorder but does not yet experience or display the pathology or symptomatology of the disease,
• (2) Inhibiting the disease; for example, inhibiting a disease, condition or disorder in an individual that is experiencing or displaying the pathology or symptomatology of the disease, condition or disorder (i.e., arresting further development of the pathology and/or symptomatology), and
• (3) Ameliorating the disease; for example, ameliorating a disease, condition or disorder in an individual that is experiencing or displaying the pathology or symptomatology of the disease, condition or disorder (i.e., reversing the pathology and/or symptomatology).
COMPOUNDS OF THE INVENTION
• One aspect of the present invention encompasses certain diaryl and arylheteroaryl urea derivatives as shown in Formula (I):

  

  
  or a pharmaceutically acceptable salt, hydrate or solvate thereof; wherein R₁, R₂, R₃, R₄, R₅, R_6a, R_6b, R_6c, R₇, R₈, X, and Q have the same definitions as described herein, supra and infra.
• Some embodiments of the present invention encompass certain diaryl and arylheteroaryl urea derivatives as shown in the following Formula

  
• wherein:
• i) R₁is aryl or heteroaryl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅selected independently from the group consisting of C_1-4acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, C_1-4alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, C_2-8dialkylsulfonamide, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-6haloalkylthio, hydroxyl, thiol, nitro, phenoxy and phenyl, or two adjacent R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅together with the atoms to which they are attached form a C_5-7cycloalkyl group or heterocyclic group each optionally substituted with F, Cl, or Br; and wherein each of said C_2-6alkenyl, C_1-6alkyl, C_2-6alkynyl and phenyl groups can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-4alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-4haloalkylthio, hydroxyl, thiol and nitro;
• ii) R₂is selected from the group consisting of C_1-6alkyl, C_2-6alkenyl, C_2-6alkynyl and C_3-7cycloalkyl;
• iii) R₃is selected from the group consisting of H, C_2-6alkenyl, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, halogen, heteroaryl and phenyl; and wherein each of said C_2-6alkenyl, C_1-6alkyl, C_2-6alkynyl, C_1-6alkylsulfonamide, C_3-7cycloalkyl, heteroaryl and phenyl groups can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-5acyl, C_1-5acyloxy, C_2-6alkenyl, C_1-4alkoxy, C_1-8alkyl, C_1-6alkylamino, C_2-8dialkylamino, C_1-4alkylcarboxamide, C_2-6alkynyl, C_1-4alkylsulfonamide, C_1-4alkylsulfinyl, C_1-4alkylsulfonyl, C_1-4alkylthio, C_1-4alkylureyl, amino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-6cycloalkyl, C_2-6dialkylcarboxamide, halogen, C_1-4haloalkoxy, C_1-4haloalkyl, C_1-4haloalkylsulfinyl, C_1-4haloalkylsulfonyl, C_1-4haloalkylthio, hydroxyl, nitro and sulfonamide;
• iv) R₄is selected from the group consisting of H, C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, C_2-8dialkylsulfonamide, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-6haloalkylthio, hydroxyl, thiol, nitro and sulfonamide;
• v) R₅is selected from the group consisting of C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C₁- alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, C_2-8dialkylsulfonamide, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-6haloalkylthio, hydroxyl, thiol, nitro and sulfonamide, wherein said C_1-6alkoxy group can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-5acyl, C_1-5acyloxy, C_2-6alkenyl, C_1-4alkoxy, C_1-8alkyl, C_1-6alkylamino, C_2-8dialkylamino, C_1-4alkylcarboxamide, C_2-6alkynyl, C_1-4alkylsulfonamide, C_1-4alkylsulfinyl, C_1-4alkylsulfonyl, C_1-4alkylthio, C_1-4alkylureyl, amino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-6cycloalkyl, C_2-6dialkylcarboxamide, halogen, C_1-4haloalkoxy, C_1-4haloalkyl, C_1-4haloalkylsulfinyl, C_1-4haloalkylsulfonyl, C_1-4haloalkylthio, hydroxyl, nitro and phenyl, and wherein said phenyl is optionally substituted with 1 to 5 halogen atoms;
• vi) R₆is selected from the group consisting of H, C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxaminde, C_2-8dialkylsulfonamide, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-6haloalkylthio, hydroxyl, thiol, nitro and sulfonamide;
• vii) R₇and R₈are independently H or C_1-8alkyl;
• viii) X is O or S; and
• ix) Q is C_1-3alkylene optionally substituted with 1 to 4 substituents selected from the group consisting of C_1-3alkyl, C_1-4alkoxy, carboxy, cyano, C_1-3haloalkyl, halogen and oxo; or Q is a bond; or a pharmaceutically acceptable salt, hydrate or solvate thereof.
• It is appreciated that certain features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features of the invention which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable subcombination.
• As used herein, “substituted” indicates that at least one hydrogen atom of the chemical group is replaced by a non-hydrogen substituent or group, the non-hydrogen substituent or group can be monovalent or divalent. When the substituent or group is divalent, then it is understood that this group is further substituted with another substituent or group. When a chemical group herein is “substituted” it may have up to the full valance of substitution; for example, a methyl group can be substituted by 1, 2, or 3 substituents, a methylene group can be substituted by 1 or 2 substituents, a phenyl group can be substituted by 1, 2, 3, 4, or 5 substituents, a naphthyl group can be substituted by 1, 2, 3, 4, 5, 6, or 7 substituents and the like. Likewise, “substituted with one or more substituents” refers to the substitution of a group with one substituent up to the total number of substituents physically allowed by the group. Further, when a group is substituted with more than one group they can be identical or they can be different.
• Compounds of the invention can also include tautomeric forms, such as keto-enol tautomers, and the like. Tautomeric forms can be in equilibrium or sterically locked into one form by appropriate substitution. It is understood that the various tautomeric forms are within the scope of the compounds of the present invention.
• Compounds of the invention can also include all isotopes of atoms occurring in the intermediates and/or final compounds. Isotopes include those atoms having the same atomic number but different mass numbers. For example, isotopes of hydrogen include deuterium and tritium.
• It is understood and appreciated that compounds of the present invention may have one or more chiral centers, and therefore can exist as enantiomers and/or diastereomers. The invention is understood to extend to and embrace all such enantiomers, diastereomers and mixtures thereof, including but not limited, to racemates. Accordingly, some embodiments of the present invention pertain to compounds of the present invention that are R enantiomers. Further, some embodiments of the present invention pertain to compounds of the present invention that are S enantiomers. In examples where more than one chiral center is present, then, some embodiments of the present invention include compounds that are RS or SR enantiomers. In further embodiments, compounds of the present invention are RR or SS enantiomers. It is understood that compounds of the present invention are intended to represent all individual enantiomers and mixtures thereof, unless stated or shown otherwise.
• In some embodiments, R₁is aryl or heteroaryl each optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅each selected independently from the group consisting of C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, C_1-6alkylimino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, C_2-8dialkylsulfonamide, halogen, C_1-4haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-6haloalkylthio, heterocyclic, hydroxyl, thiol, nitro, phenoxy and phenyl, wherein said C_2-6alkenyl, C_1-6alkyl, C_2-6alkynyl, C_1-6alkylamino, C_1-6alkylimino, C_2-8dialkylamino, heterocyclic, and phenyl are each optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-6haloalkylthio, hydroxyl, thiol and nitro;
• Some embodiments of the present invention pertain to compounds wherein R₁is phenyl or naphthyl each optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅each selected independently from the group consisting of C_1-6acyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylsulfonyl, amino, C_1-6alkylamino, C_2-8dialkylamino, C_1-6alkylimino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, heterocyclic, hydroxyl, nitro, and phenyl, or two adjacent R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅together with the atoms to which they are attached form a C_5-7cycloalkyl group or heterocyclic group each optionally substituted with F; and wherein said C_1-6alkyl, C_1-6alkylimino, and heterocyclic are each optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6acyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylsulfonyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carboxamide, cyano, C_3-7cycloalkyl, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, and hydroxyl.
• Some embodiments of the present invention pertain to compounds wherein R₁is phenyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃each selected independently from the group consisting of C_1-6acyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylsulfonyl, amino, C_1-6alkylamino, C_2-8dialkylamino, C_1-6alkylimino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, heterocyclic, hydroxyl, nitro, and phenyl, or two adjacent R₉, R₁₀, R₁₁, R₁₂, and R₁₃together with the atoms to which they are attached form a C_5-7cycloalkyl group or heterocyclic group each optionally substituted with F; and wherein said C_1-6alkyl, C_1-6alkylimino, and heterocyclic are each optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6acyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylsulfonyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carboxamide, cyano, C_3-7cycloalkyl, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, and hydroxyl.
• Some embodiments of the present invention pertain to compounds wherein R₁is phenyl or naphthyl each optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅each selected independently from the group consisting of C_1-6acyl, C_1-6alkoxy, C_1-6alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, C_1-6alkylimino, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, heterocyclic, hydroxyl, nitro, and phenyl, or two adjacent R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅together with the atoms to which they are attached form a C_5-7cycloalkyl group or heterocyclic group each optionally substituted with F; and wherein said C_1-6alkyl, C_1-6alkylimino, and heterocyclic are each optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, and hydroxyl.
• Some embodiments of the present invention pertain to compounds wherein R₁is phenyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃each selected independently from the group consisting of C_1-6acyl, C_1-6alkoxy, C_1-6alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, C_1-6alkylimino, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, heterocyclic, hydroxyl, nitro, and phenyl, or two adjacent R₉, R₁₀, R₁₁, R₁₂, and R₁₃together with the atoms to which they are attached form a C_5-7cycloalkyl group or heterocyclic group each optionally substituted with F; and wherein said C_1-6alkyl, C_1-6alkylimino, and heterocyclic are each optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, and hydroxyl.
• Some embodiments of the present invention pertain to compounds wherein R₁is phenyl or naphthyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅each selected independently from the group consisting of —C(O)CH₃, —OCH₃, —CH₃, —CH(CH₃)₂, —CH(OH)CH₃, —N(CH₃)₂, (2-dimethylamino-ethyl)-methyl-amino [i.e., —N(CH₃)CH₂CH₂N(CH₃)₂], (3-dimethylamino-propyl)-methyl-amino [i.e., —N(CH₃)CH₂CH₂CH₂N(CH₃)₂], —C(═NOH)CH₃, cyano, —F, —Cl, —Br, —OCF₃, —CF₃, 4-methyl-piperazin-1-yl, morpholin-4-yl, 4-methyl-piperidin-1-yl, hydroxyl, nitro, and phenyl.
• Some embodiments of the present invention pertain to compounds wherein R₁is phenyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃, R₁₄each selected independently from the group consisting of —C(O)CH₃, —OCH₃, —CH₃, —CH(CH₃)₂, —CH(OH)CH₃, —N(CH₃)₂, (2-dimethylamino-ethyl)-methyl-amino [i.e., —N(CH₃)CH₂CH₂N(CH₃)₂], (3-dimethylamino-propyl)-methyl-amino [i.e., —N(CH₃)CH₂CH₂CH₂N(CH₃)₂], —C(═NOH)CH₃, cyano, —F, —Cl, —Br, —OCF₃, —CF₃, 4-methyl-piperazin-1-yl, morpholin-4-yl, 4-methyl-piperidin-1-yl, hydroxyl, nitro, and phenyl.
• Some embodiments of the present invention pertain to compounds wherein R₁is phenyl or naphthyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅each selected independently from the group consisting of —OCH₃, —CH₃, cyano, —F, —Cl, —Br, —OCF₃, and —CF₃.
• Some embodiments of the present invention pertain to compounds wherein R₁is phenyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃each selected independently from the group consisting of —OCH₃, —CH₃, cyano, —F, —Cl, —Br, —OCF₃, and —CF₃.
• Some embodiments of the present invention pertain to compounds wherein R₁is phenyl and can be represented by the Formula shown below:

  

  
  wherein each variable in the above formula has the same meaning as described herein, supra and infra. In some embodiments, R₇and R₈are both —H, Q is a bond, and X is O.
• Some embodiments of the present invention pertain to compounds wherein R₁is phenyl and can be represented by Formula (Ia) as shown below:

  
• wherein:
• R₉to R₁₃substituents are each selected independently from the group consisting of H, C_1-6acyl, C_1-6acyloxy, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, hydroxyl, nitro and phenyl, or two adjacent substituents together with the phenyl form a C_5-7cycloalkyl optionally comprising 1 to 2 oxygen atoms; and wherein each said C_1-6alkyl and phenyl groups can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6alkoxy, C_1-6alkyl, amino, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, hydroxyl and nitro.
• In some embodiments, R₁is phenyl optionally substituted with R₉to R₁₃substituents selected independently from the group consisting of acyl, C_1-6alkoxy, C_1-6alkyl, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, nitro and phenyl; and wherein said phenyl can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6alkoxy, C_1-6alkyl, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl and nitro.
• In some embodiments, R₁is phenyl optionally substituted with R₉to R₁₃substituents selected independently from the group consisting of C_1-6acyl, C_1-6alkoxy, C_1-6alkyl, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, nitro and phenyl.
• In some embodiments, R₁is phenyl optionally substituted with R₉to R₁₃substituents selected independently from the group consisting of —C(O)CH₃, —C(O)CH₂CH₃, —C(O)CH(CH₃)₂, —C(O)CH₂CH₂CH₃, —C(O)CH₂CH(CH₃)₂, —OCH₃, —OCH₂CH₃, —OCH(CH₃)₂, —OCH₂CH₂CH₃, —OCH₂CH(CH₃)₂, —CH₃, —CH₂CH₃, —CH(CH₃)₂, —CH₂CH₂CH₃, —CH₂CH₂CH₃, cyano, F, Cl, Br, 1,—OCF₃, —OCHF₂, —OCFH₂, —OCF₂CF₃, —OCH₂CF₃, —CF₃, —CHF₂, —CFH₂, —CF₂CF₃, —CH₂CF₃, nitro and phenyl.
• In some embodiments, R₁is phenyl optionally substituted with R₉to R₁₃substituents are each selected independently from the group consisting of —C(O)CH₃, —OCH₃, —CH₃, —CH(CH₃)₂, —CH(OH)CH₃, —N(CH₃)₂, (2-dimethylamino-ethyl)-methyl-amino, (3-dimethylamino-propyl)-methyl-amino, —C(═NOH)CH₃, cyano, —F, —Cl, —Br, —OCF₃, —CF₃, 4-methyl-piperazin-1-yl, morpholin4-yl, 4-methyl-piperidin-1-yl, hydroxyl, nitro, and phenyl.
• In some embodiments, R₁is phenyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂and R₁₃substituents selected independently from the group consisting of —C(O)CH₃, —OCH₃, —CH₃, cyano, —F, —Cl, —Br, —OCF₃, —CF₃, nitro and phenyl.
• Some embodiments of the present invention pertain to compounds wherein R₁is naphthyl optionally substituted with R₉R₁₀R₁₁R₁₂R₁₃R₁₄and R₁₅substituents selected independently from the group consisting of C_1-6acyl, C_1-6acyloxy, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, hydroxyl and nitro; and wherein said C_1-6alkyl can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6alkoxy, C_1-6alkyl, amino, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, hydroxyl and nitro.
• In some embodiments, R₁is naphthyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄and R₁₅substituents selected independently from the group consisting of C_1-6acyl, C_1-6alkoxy, C_1-6alkyl, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl and nitro.
• In some embodiments, R₁is naphthyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄and R₁₅substituents selected independently from the group consisting of —C(O)CH₃, C(O)CH₂CH₃, —C(O)CH(CH₃)₂, —C(O)CH₂CH₂CH₃, —C(O)CH₂CH(CH₃)₂, —OCH₃, —OCH₂CH₃, —OCH(CH₃)₂, —OCH₂CH₂CH₃, —OCH₂CH(CH₃)₂, —CH₃, —CH₂CH₃, —CH(CH₃)₂, —CH₂CH₂CH₃, —CH₂CH(CH₃)₂, —CH₂CH₂CH₂CH₃, cyano, —F, —Cl, —Br, —I, —OCF₃, —OCHF₂, —OCFH₂, —OCF₂CF₃, —OCH₂CF₃, —CF₃, —CHF₂, —CFH₂, —CF₂CF₃, —CH₂CF₃and nitro.
• In some embodiments, R₁is naphthyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄and R₁₅substituents selected independently from the group consisting of —C(O)CH₃, —C(O)CH₂CH₃, —C(O)CH(CH₃)₂, —C(O)CH₂CH₂CH₃, —C(O)CH₂CH(CH₃)₂, —OCH₃, —OCH₂CH₃, —OCH(CH₃)₂, —OCH₂CH₂CH₃, —OCH₂CH(CH₃)₂, —CH₃, —CH₂CH₃, —CH(CH₃)₂, —CH₂CH₂CH₃, —CH₂CH(CH₃)₂, —CH₂CH₂CH₂CH₃, cyano, —F, —Cl, —Br, —I, —OCF₃, —OCHF₂, —OCFH₂, —OCF₂CF₃, —OCH₂CF₃, —CF₃, —CHF₂, —CFH₂, —CF₂CF₃, —CH₂CF₃and nitro.
• In some embodiments, R₁is naphthyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁, R₁₄and R₁₅substituents selected independently from the group consisting of —C(O)CH₃, —OCH₃, —CH₃, cyano, —F, —Cl, —Br, —OCF₃, —CF₃and nitro.
• Some embodiments of the present invention pertain to compounds wherein R₁is heteroaryl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃each selected independently from the group consisting of C_1-6acyl, C_1-6alkoxy, C_1-6alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, C_1-6alkylimino, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, heterocyclic, hydroxyl, nitro, and phenyl, or two adjacent R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅together with the atoms to which they are attached form a C_5-7cycloalkyl group or heterocyclic group each optionally substituted with F; and wherein said C_1-6alkyl, C_1-6alkylimino, and heterocyclic are each optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, and hydroxyl.
• Some embodiments of the present invention pertain to compounds wherein R₁is heteroaryl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃each selected independently from the group consisting of —C(O)CH₃, —OCH₃, —CH₃, —CH(CH₃)₂, —CH(OH)CH₃, —N(CH₃)₂, (2-dimethylamino-ethyl)-methyl-amino, (3-dimethylamino-propyl)-methyl-amino, —C(═NOH)CH₃, cyano, —F, —Cl, —Br, —OCF₃, —CF₃, 4-methyl-piperazin-1-yl, morpholin-4-yl, 4-methyl-piperidin-1-yl, hydroxyl, nitro, phenyl.
• Some embodiments of the present invention pertain to compounds wherein R₁is heteroaryl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃each selected independently from the group consisting of —OCH₃, —CH₃, cyano, —F, —Cl, —Br, —OCF₃, and —CF₃.
• Some embodiments of the present invention pertain to compounds wherein R₁is heteroaryl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃each selected independently from the group consisting of C_1-6acyl, C_1-6acyloxy, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, hydroxyl, nitro and phenyl, or two adjacent R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅together with the atoms to which they are attached form a C_5-7cycloalkyl group or heterocyclic group; and wherein each of said C_1-6alkyl and phenyl groups can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6alkoxy, C_1-6alkyl, amino, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, hydroxyl and nitro.
• In some embodiments, R₁is heteroaryl optionally substituted with R₉, R₁₀, R₁₁, R₁₂and R₁₃each selected independently from the group consisting of C_1-6acyl, C_1-6alkoxy, C_1-6alkyl, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, nitro and phenyl; and wherein said phenyl can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6alkoxy, C_1-6alkyl, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl and nitro.
• In some embodiments, R₁is heteroaryl optionally substituted with R₉, R₁₀, R₁₁, R₁₂and R₁₃each selected independently from the group consisting of C_1-6acyl, C_1-6alkoxy, C_1-6alkyl, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, nitro and phenyl.
• In some embodiments, R₁is heteroaryl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃each selected independently from the group consisting of —C(O)CH₃, —C(O)CH₂CH₃, —C(O)CH(CH₃)₂, —C(O)CH₂CH₂CH₃, —C(O)CH₂CH(CH₃)₂, —OCH₃, —OCH₂CH₃, —OCH(CH₃)₂, —OCH₂CH₂CH₃, —OCH₂CH(CH₃)₂, —CH₃, —CH₂CH₃, —CH(CH₃)₂, —CH₂CH₂CH₃, —CH₂CH₂(CH₃)₂, —CH₂CH₂CH₂CH₃, cyano, —F, —Cl, —Br, —I, —OCF₃, —OCHF₂, —OCFH₂, —OCF₂CF₃, —OCH₂CF₃, —CF₃, —CHF₂, CFH₂, —CF₂CF₃, —CH₂CF₃, nitro and phenyl.
• In some embodiments, R₁is heteroaryl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃each selected independently from the group consisting of —C(O)CH₃, —OCH₃, —CH₃, cyano, —F, —Cl, —Br, —OCF₃, —CF₃, nitro and phenyl. In some embodiments, R₁is heteroaryl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃selected independently from the group consisting of H, —C(O)CH₃, —OCH₃, —CH₃, cyano, —F, —Cl, —Br, —OCF₃, —CF₃, nitro and phenyl.
• In some embodiments R₁is heteroaryl having 5-atoms in the aromatic ring examples of which are represented by the following formulae:

  TABLE 2

  
  wherein the 5-membered heteroaryl is bonded at any available position of the ring, for example, a imidazolyl ring can be bonded at one of the ring nitrogens (i.e., imidazol-1-yl group) or at one of the ring carbons (i.e., imidazol-2-yl, imidazol-4-yl or imiadazol-5-yl group).
• In some embodiments, R₁is a 6-membered heteroaryl, for example, a 6-membered heteroaryl as shown in TABLE 3:

  TABLE 3

  
  wherein the heteroaryl group is bonded at any ring carbon. In some embodiments, R₁is selected from the group consisting of pyridinyl, pyridazinyl, pyrimidinyl and pyrazinyl. In some embodiments, R₁is pyridinyl.
• In some embodiments R₁is a heteroaryl, for example but not limited to those shown in TABLE 2 and 3, optionally substituted with 1 to 3 substituents selected from the group consisting of C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, C_2-8dialkylsulfonamide, halogen, C_1-6haloalkoxy, C_1-6aloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-6haloalkylthio, hydroxyl, thiol, nitro, phenoxy and phenyl; and wherein each of said C_1-6alkenyl, C_1-6alkyl, C_1-6alkynyl and phenyl groups can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_1-6alkynyl, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-6haloalkylthio, hydroxyl, thiol and nitro.
• Some embodiments of the present invention pertain to compounds wherein R₂is H or C_1-6alkyl.
• Some embodiments of the present invention pertain to compounds wherein R₂is C_1-6alkyl. In some embodiments, R₂is selected from the group consisting of —CH₃, —CH₂CH₃, —CH(CH₃)₂, —CH₂CH₂CH₃, —CH₂CH(CH₃)₂and —CH₂CH₂CH₂CH₃. In some embodiments, R₂is —CH₃or —CH(CH₃)₂.
• Some embodiments of the present invention can be represented by Formulae (Ib) and (Ic) respectively as shown below:

  

  
  wherein each variable in Formulae (Ib) and (Ic) has the same meaning as described herein, supra and infra.
• Some embodiments of the present invention pertain to compounds wherein R₂is H.
• It is understood that when R₂is H, then tautomers are possible. It is well understood and appreciated in the art that pyrazoles can exist in various tautomeric forms. Two possible tautomeric forms are illustrated below:

  

  
  It is further understood that tautomeric forms can also have corresponding nomenclature for each represented tautomer, for example, Formula (Id) and Formula (Id′) can be represented by the general chemical names 1H-pyrazol-3-yl and 2H-pyrazole-3-yl respectively. Therefore, the present invention includes all tautomers and the various nomenclature designations.
• Some embodiments of the present invention pertain to compounds wherein R₂is C_2-6alkenyl. In some embodiments, R₂is —CH₂CH═CH₂.
• Some embodiments of the present invention pertain to compounds wherein R₂is C_2-6alkynyl.
• Some embodiments of the present invention pertain to compounds wherein R₂is C_3-7cycloalkyl. In some embodiments, R₂is cyclopropyl.
• Some embodiments of the present invention pertain to compounds wherein R₃is selected from the group consisting of H, C_2-6alkenyl, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, halogen, heteroaryl or phenyl; and wherein each of said C_2-6alkenyl, C_1-6alkyl, C_2-6alkynyl, heteroaryl and phenyl groups can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6alkylamino, C_2-8dialkylamino, C_2-6alkenyl, C_1-4alkoxy, C_1-8alkyl, C_2-6alkynyl, amino, halogen, C_1-4haloalkoxy and hydroxyl.
• In some embodiments, R₃is selected from the group consisting of H, C_2-6alkenyl, C_1-6alkyl, C_2-6alkynyl, carbo-C_1-6-alkoxy, carboxy, cyano, C_3-7cycloalkyl, halogen, heteroaryl or phenyl; and wherein each of said C_2-6alkenyl, C_1-6alkyl, C_2-6alkynyl and phenyl groups can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_2-8dialkylamino, C_2-6alkenyl, C_1-4alkoxy, C_2-6alkynyl, halogen, C_1-4haloalkoxy and hydroxyl.
• In some embodiments, R₃is selected from the group consisting of H, —CH═CH₂, —CH₃,
• In some embodiments, R₃is selected from the group consisting of H, —CH═CH₂, —CH₃, —CH₂CH₃, —CH(CH₃)₂, —CH₂CH₂CH₃, —CH₂CH(CH₃)₂, —CH₂CH₂CH₂CH₃. —C≡CH, —C(O)OCH₃, —C(O)OCH₂CH₃, carboxy, cyano, cyclopropyl, F, Cl, Br, I, thiophen-2-yl, thiophen-3-yl, phenyl, —CH₂CH₂N(CH₃)₂, 2-methoxyphenyl, 3-methoxyphenyl, 4-methoxyphenyl, —CH═CH—C≡CH, 4-fluorophenyl, 4-trifluoromethoxyphenyl, —CH₂OH and —CH₂CH₂OH.
• In some embodiments, R₃is H, F, Cl or Br.
• Some embodiments of the present invention pertain to compounds of Formula (Ie) as shown
• Some embodiments of the present invention pertain to compounds of Formula (Ie) as shown

  

  
  wherein each variable in Formula (Ie) has the same meaning as described herein, supra and infra. below:
• Some embodiments of the present invention pertain to compounds of Formula (If) as shown below:

  

  
  wherein each variable in Formula (If) has the same meaning as described herein, supra and infra.
• Some embodiments of the present invention pertain to compounds of Formula (g) as shown below;

  

  
  wherein each variable in Formula (Ig) has the same meaning as described herein, supra and infra.
• Some embodiments of the present invention pertain to compounds of Formula (Ih) as shown below:

  

  
  wherein each variable in Formula (Ih) has the same meaning as described herein, supra and infra.
• Some embodiments of the present invention pertain to compounds of Formula (Ii) as shown

  

  
  wherein each variable in Formula (Ii) has the same meaning as described herein, supra and infra.
• Some embodiments of the present invention pertain to compounds of Formula (Ij) as shown below:

  

  
  wherein each variable in Formula (Ij) has the same meaning as described herein, supra and infra.
• Some embodiments of the present invention pertain to compounds of Formula (Ik) as shown below:

  

  
  wherein each variable in Formula (Ik) has the same meaning as described herein, supra and infra.
• Some embodiments of the present invention pertain to compounds of Formula (Ik′) as shown below:

  

  
  wherein each variable in Formula (Ik′) has the same meaning as described herein, supra and infra.
• Some embodiments of the present invention pertain to compounds wherein R₄is selected from the group consisting of H, C_1-6alkyl and C_1-6haloalkyl.
• In some embodiments, R₄is selected from the group consisting of H, —CH₃, —CH₂CH₃, —CH(CH₃)₂, —CH₂CH₂CH₃, —CH₂CH(CH₃)₂, —CH₂CH₂CH₂CH₃, —CF₃, —CHF₂, —CFH₂, —CF₂CF₃and —CH₂CF₃.
• In some embodiments, R₄is selected from the group consisting of H or —CF₃.
• Some embodiments of the present invention can be represented by Formulae (Im) and (In) as shown below:

  

  
  wherein each variable in Formulae (Im) and (In) has the same meaning as described herein, supra and infra.
• Some embodiments of the present invention can be represented by Formulae (Io) and (Io′) as shown below:

  

  
  wherein each variable in Formulae (Io) and (Io′) has the same meaning as described herein, supra and infra.
• Some embodiments of the present invention pertain to compounds wherein R₅is selected from the group consisting of C_1-6alkoxy, C_1-6alkylthio, amino, C_1-6alkylamino, C_2-8dialkylamino, halogen, C_1-6haloalkoxy, and hydroxyl, wherein said C_1-6alkoxy group can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of amino, C_1-6alkylamino, C_2-8dialkylamino, amino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, halogen, and phenyl, and wherein said amino and phenyl are each optionally substituted with 1 to 5 further substituents selected from the group consisting of halogen and carbo-C_1-6-alkoxy.
• Some embodiments of the present invention pertain to compounds wherein R₅is C_1-6alkoxy, or hydroxyl, wherein said C_1-6alkoxy group can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-4alkoxy, C_1-6alkylamino, C_2-8dialkylamino, alkylsulfinyl, C_1-4alkylsulfonyl, C_1-4alkylthio, amino, halogen, C_1-4haloalkoxy, C_1-4haloalkyl, C_1-4haloalkylsulfinyl, C_1-4haloalkylsulfonyl, C_1-4haloalkylthio, hydroxyl and phenyl, and wherein said phenyl is optionally substituted with 1 to 5 halogen atoms.
• Some embodiments of the present invention pertain to compounds wherein R₅is selected from the group consisting of C_1-6alkoxy, C_1-6haloalkoxy, and hydroxyl, wherein said C_1-6alkoxy group can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of amino, C_2-8dialkylamino, carboxy, and phenyl, and wherein said amino and phenyl are each optionally substituted with 1 to 5 further substituents selected from the group consisting of halogen and carbo-C_1-6-alkoxy.
• In some embodiments, R₅is C_1-6alkoxy, or hydroxyl, and wherein said C_1-6alkoxy group can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-4alkoxy, C_1-6alkylamino, C_2-8dialkylamino, amino, C_1-4haloalkoxy, hydroxyl and phenyl, wherein said phenyl is optionally substituted with 1 to 5 halogen atoms.
• Some embodiments of the present invention pertain to compounds wherein R₅is selected from the group consisting of —OCH₃, —OCH₂CH₃, —OCH(CH₃)₂, —OCF₃, hydroxyl, benzyloxy, 4-chloro-benzyloxy, phenethyloxy, 2-dimethylamino-ethoxy [i.e., —OCH₂CH₂N(CH₃)₂], 3-dimethylamino-propoxy [i.e., —OCH₂CH₂CH₂N(CH₃)₂], carboxymethoxy [i.e., —OCHC(O)OH], and 2-tert-butoxycarbonylamino-ethoxy [i.e., —OCH₂CH₂NHC(O)OC(CH₃)₃].
• In some embodiments, R₅is selected from the group consisting of —OCH₃, —OCH₂CH₃, —OCH(CH₃)₂, —OCH₂CH₂CH₃, —OCH₂CH(CH₃)₂, hydroxyl, —OCH₂CH₂OH, —OCH₂CH₂OCH₃, —OCH₂CH₂OCH₂CH₃, —OCH₂CH₂OCH(CH₃)₂, —OCH₂CH₂OCH₂CH₂CH₃, —OCH₂CH₂OCH₂CH(CH₃)₂, —OCH₂CH₂NH₂, —OCH₂CH₂NHCH₃, —OCH₂CH₂N(CH₃)₂, —OCH₂CH₂OCF₃, —OCH₂CH₂OCH F₂, —OCH₂CH₂OCFH₂, —OCH₂C₆H₅, —OCH₂CH₂C₆H₅, —OCH₂C₆H₅-o-Cl, —OCH₂C₆H₅-m-Cl and —OCH₂C₆H₅-p-Cl.
• In some embodiments, R₅is selected from the group consisting of —OCH₃, —OCH₂CH₃, —OCH(CH₃)₂, hydroxyl, —OCH₂CH₂N(CH₃)₂, —OCH₂C₆H₅, —OCH₂CH₂C₆H₅and —OCH₂C₆H₅-p-Cl.
• In some embodiments, R₅is —OCH₃.
• Some embodiments of the present invention pertains to compounds wherein R₆is selected from the group consisting of H, C_1-6alkoxy, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, halogen and hydroxyl.
• In some embodiments, R₆is H.
• Some embodiments of the present invention pertain to compounds wherein R_6a, R_6b, and R_6care each independently selected from the group consisting of H, C_1-6alkoxy, C_1-6alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, hydroxyl, and nitro.
• Some embodiments of the present invention pertain to compounds wherein R_6a, R_6b, and R_6care each independently selected from the group consisting of H, —OCH₃, —CH₃, —N(CH₃)₂, cyano, —F, —Cl, —Br, —OCF₃, hydroxyl, and nitro.
• Some embodiments of the present invention pertain to compounds wherein R_6a, R_6b, and R_6care each independently selected from the group consisting of H, C_1-6alkoxy, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, halogen and hydroxyl.
• Some embodiments of the present invention pertain to compounds wherein R_6a, R_6b, and R_6care all H.
• Some embodiments of the present invention pertain to compounds wherein R₅is C_1-6alkoxy and R_6a, R_6b, and R_6care all H.
• In some embodiments, R₅is —OCH₃.
• Some embodiments of the present invention pertain to compounds represented by Formula (Ip) as shown below:

  

  
  wherein each variable in Formula (Ip) has the same meaning as described herein, supra and infra. In some embodiments, compounds of the present invention have Formula (Ip) and Q is a bond.
• Some embodiments of the present invention pertain to compounds represented by Formula (Iq) as shown below:

  

  
  wherein each variable in Formula (Iq) has the same meaning as described herein, supra and infra. In some embodiments, compounds of the present invention have Formula (Iq) and Q is a bond.
• Some embodiments of the present invention pertain to compounds wherein R₇is H or C_1-8alkyl.
• In some embodiments, R₇is selected from the group consisting of H, —CH₃, —CH₂CH₃, —CH(CH₃)₂, —CH₂CH₂CH₃, —CH₂CH(CH₃)₂and —CH₂CH₂CH₂CH₃.
• In some embodiments, R₇is H.
• Some embodiments of the present invention pertain to compounds wherein R₈is H or C_1-8alkyl.
• In some embodiments, R₈is selected from the group consisting of H, —CH₃, —CH₂CH₃, —CH(CH₃)₂, —CH₂CH₂CH₃, —CH₂CH(CH₃)₂and —CH₂CH₂CH₂CH₃.
• In some embodiments, R₈is H.
• Some embodiments of the present invention pertain to compounds wherein both R₇and R₈are H.
• Some embodiments of the present invention pertain to compounds represented by Formula (Ir) as shown below:

  

  
  wherein each variable in Formula (Ir) has the same meaning as described herein, supra and infra.
• Some embodiments of the present invention pertain to compounds represented by Formula (Is) as shown below:

  

  
  wherein each variable in Formula (Is) has the same meaning as described herein, supra and infra.
• Some embodiments of the present invention pertain to compounds wherein X is O (i.e., oxygen).
• Some embodiments of the present invention pertain to compounds wherein X is S (i.e., sulfur).
• Some embodiments of the present invention pertain to compounds wherein Q is C_1-3alkylene optionally substituted with C_1-3alkyl, C_1-3haloalkyl, halogen and oxo.
• Some embodiments of the present invention pertain to compounds wherein Q is a C_1-3alkylene optionally substituted with oxo. As used herein, oxo refers to a double bonded oxygen. In some embodiments, Q is —C(O)— (i.e., a carbonyl).
• In some embodiments, Q is —CH₂—.
• Some embodiments of the present invention pertain to compounds wherein Q is a bond.
• Some embodiments of the present invention can be represented by Formula (It) as shown below:

  

  
  wherein each variable in Formula (It) has the same meaning as described herein, supra and infra.
• Some embodiments of the present invention can be represented by Formula (Iu) as shown below:

  

  
  wherein each variable in Formula (Iu) has the same meaning as described herein, supra and infra.
• In some embodiments, R₁is phenyl and can be represented by Formula (Iv) as shown below:

  

  
  wherein each variable in Formula (Iv) has the same meaning as described herein, supra and infra. In some embodiments, R₇and R₈are both H. In some embodiments, X is O (i.e., oxygen).
• In some embodiments, R₁is phenyl and can be represented by Formula (1w) as shown below:

  

  
  wherein each variable in Formula (Iw) has the same meaning as described herein, supra and infra. In some embodiments, R₇and R₈are both H. In some embodiments, X is O (i.e., oxygen).
• Some embodiments of the present invention pertain to compounds of Formula (IIa):

  
• wherein:
• R¹is phenyl or naphthyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅each selected independently from the group consisting of C_1-6acyl, C_1-6alkoxy, C_1-6alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, C_1-6alkylimino, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, heterocyclic, hydroxyl, nitro, and phenyl, or two adjacent R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅together with the atoms to which they are attached form a C_5-7cycloalkyl group or heterocyclic group each optionally substituted with F; and wherein said C_1-6alkyl, C_1-6alkylimino, and heterocyclic are each optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, and hydroxyl;
• R₂is C_1-6alkyl;
• R₃is H or halogen;
• R₄is selected from the group consisting of H, C_1-6alkyl and C_1-6haloalkyl;
• R₅is selected from the group consisting of C_1-6alkoxy, C_1-6haloalkoxy, and hydroxyl, wherein said C_1-6alkoxy group can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of amino, C_2-8dialkylamino, carboxy, and phenyl, and wherein said amino and phenyl are each optionally substituted with 1 to 5 further substituents selected from the group consisting of halogen and carbo-C_1-6-alkoxy;
• R_6a, R_6b, and R_6care each independently selected from the group consisting of H, C_1-6alkoxy, C_1-6alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, hydroxyl, and nitro
• R₇and R₈are both H;
• X is O; and
• Q is a bond.
• Some embodiments of the present invention pertain to compounds of Formula (IIa):

  
• wherein:
• R₁is phenyl or naphthyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅each selected independently from the group consisting of —C(O)CH₃, —OCH₃, —CH₃, —CH(CH₃)₂, —CH(OH)CH₃, —N(CH₃)₂, (2-dimethylamino-ethyl)-methyl-amino, (3-dimethylamino-propyl)-methyl-amino, —C(═NOH)CH₃, cyano, —F, —Cl, —Br, —OCF₃, —CF₃, 4-methyl-piperazin-1-yl, morpholin-4-yl, 4-methyl-piperidin-1-yl, hydroxyl, nitro, and phenyl;
• R₂is —CH₃or —CH(CH₃)₂;
• R₃is H, F, Cl, or Br;
• R₄is —H, or —CF₃;
• R₅is selected from the group consisting of —OCH₃, —OCH₂CH₃, —OCH(CH₃)₂, —OCF₃, hydroxyl, benzyloxy, 4-chloro-benzyloxy, phenethyloxy, 2-dimethylamino-ethoxy, 3-dimethylamino-propoxy, carboxymethoxy, and 2-tert-butoxycarbonylamino-ethoxy;
• R_6a, R_6b, and R_6care each independently selected from the group consisting of H, —OCH₃, —CH₃, —N(CH₃)₂, cyano, —F, —Cl, —Br, —OCF₃, hydroxyl, and nitro;
• R₇and R₈are both H;
• X is O; and
• Q is a bond.
• Some embodiments of the present invention pertain to compounds of Formula (IIa):

  
• wherein:
• R₁is phenyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃each selected independently from the group consisting of —C(O)CH₃, —OCH₃, —CH₃, —CH(CH₃)₂, —CH(OH)CH₃, —N(CH₃)₂, (2-dimethylamino-ethyl)-methyl-amino, (3-dimethylamino-propyl)-methyl-amino, —C(═NOH)CH₃, cyano, —F, —Cl, —Br, —OCF₃, —CF₃, 4-methyl-piperazin-1-yl, morpholin-4-yl, 4-methyl-piperidin-1-yl, hydroxyl, nitro, and phenyl;
• R₂is —CH₃or —CH(CH₃)₂;
• R₃is —H, —F, —Cl, or —Br;
• R₄is —H, or —CF₃;
• R₅is selected from the group consisting of —OCH₃, —OCH₂CH₃, —OCH(CH₃)₂, —OCF₃, hydroxyl, benzyloxy, 4-chloro-benzyloxy, phenethyloxy, 2-dimethylamino-ethoxy, 3-dimethylamino-propoxy, carboxymethoxy, and 2-tert-butoxycarbonylamino-ethoxy;
• R_6a, R_6b, and R_6care each independently selected from the group consisting of —H, —OCH₃, —CH₃, —N(CH₃)₂, cyano, F, Cl, Br, —OCF₃, hydroxyl, and nitro;
• R₇and R₈are both H;
• X is O; and
• Q is a bond.
• Some embodiments of the present invention pertain to compounds of Formula (IIa):

  
• wherein:
• R₁is phenyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃each selected independently from the group consisting of —C(O)CH₃, —OCH₃, —CH₃, —CH(CH₃)₂, —N(CH₃)₂, cyano, —F, —Cl, —Br, —OCF₃, —CF₃, hydroxyl, and nitro;
• R₂is —CH₃;
• R₃is —H, —F, —Cl, or —Br;
• R₄is —H;
• R₅is selected from the group consisting of —OCH₃, —OCH₂CH₃, —OCH(CH₃)₂, —OCF₃, hydroxyl, benzyloxy, 4-chloro-benzyloxy, phenethyloxy, 2-dimethylamino-ethoxy, 3-dimethylamino-propoxy, carboxymethoxy, and 2-tert-butoxycarbonylamino-ethoxy;
• R_6a, R_6b, and R_6care each —H;
• R₇and R₈are both —H;
• X is O; and
• Q is a bond.
• Some embodiments of the present invention include compounds illustrated in TABLE A as shown below:

  TABLE A
  Cmpd
  #	Structure	Chemical Name

  1		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-chloro-phenyl)-urea
  2		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-fluoro-phenyl)-urea
  3		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (2,4-dichloro-phenyl)-urea
  4		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-methoxy-phenyl)-urea
  5		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-bromo-phenyl)-urea
  6		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-chloro-3-trifluoromethyl- phenyl)-urea
  7		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3,5-difluoro-phenyl)-urea
  8		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (2,4-difluoro-phenyl)-urea
  9		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-chloro-2-trifluoromethyl- phenyl)-urea
  10		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3,4-difluoro-phenyl)-urea
  11		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3-trifluoromethyl-phenyl)-urea
  12		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-trifluoromethyl-phenyl)-urea
  13		1-(3,5-Bis-trifluoromethyl-phenyl)- 3-[3-(4-bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-urea
  14		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- naphthalen-2-yl-urea
  15		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3-nitro-phenyl)-urea
  16		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-fluoro-3-nitro-phenyl)-urea
  17		1-(3-Acetyl-phenyl)-3-[3-(4-bromo- 2-methyl-2H-pyrazol-3-yl)-4- methoxy-phenyl]-urea
  18		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3-fluoro-phenyl)-urea
  19		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-trifluoromethoxy-phenyl)-urea
  20		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3-chloro-phenyl)-urea
  21		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3-cyano-phenyl)-urea
  22		1-Biphenyl-2-yl-3-[3-(4-bromo-2- methyl-2H-pyrazol-3-yl)-4- methoxy-phenyl]-urea
  23		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-isopropyl-phenyl)-urea
  24		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- naphthalen-1-yl-urea
  25		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (2-fluoro-phenyl)-urea
  26		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-chloro-phenyl)-urea
  27		1-(4-Chloro-phenyl)-3-[3-(4-fluoro- 2-methyl-2H-pyrazol-3-yl)-4- methoxy-phenyl]-urea
  28		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-fluoro-phenyl)-urea
  29		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (2,4-difluoro-phenyl)-urea
  30		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3-methoxy-phenyl)-urea
  31		1-[3-(4-Fluoro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-fluoro-phenyl)-urea
  32		1-(3,4-Difluoro-phenyl)-3-[3-(4- fluoro-2-methyl-2H-pyrazol-3-yl)- 4-methoxy-phenyl]-urea
  33		1-[3-(4-Fluoro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3-fluoro-phenyl)-urea
  34		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (2-trifluoromethoxy-phenyl)-urea
  35		1-(3-Acetyl-phenyl)-3-[3-(4-chloro- 2-methyl-2H-pyrazol-3-yl)-4- methoxy-phenyl]-urea
  36		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3-fluoro-phenyl)-urea
  37		1-(2,4-Difluoro-phenyl)-3-[3-(4- fluoro-2-methyl-2H-pyrazol-3-yl)- 4-methoxy-phenyl]-urea
  38		1-[3-(4-Bromo-2-methyl-5- trifluoromethyl-2H-pyrazol-3-yl)-4- methoxy-phenyl]-3-(4-chloro- phenyl)-urea
  39		1-[3-(4-Bromo-2-methyl-5- trifluoromethyl-2H-pyrazol-3-yl)-4- methoxy-phenyl]-3-(4-fluoro- phenyl)-urea
  40		1-[3-(4-Chloro-2-methyl-5- trifluoromethyl-2H-pyrazol-3-yl)-4- methoxy-phenyl]-3-(4-fluoro- phenyl)-urea
  41		1-[3-(4-Chloro-2-methyl-5- trifluoromethyl-2H-pyrazol-3-yl)-4- methoxy-phenyl]-3-(4-chloro- phenyl)-urea
  42		1-(4-Chloro-phenyl)-3-[4-methoxy- 3-(2-methyl-5-trifluoromethyl-2H- pyrazol-3-yl)-phenyl]-urea
  43		1-(4-Chloro-phenyl)-3-[3-(2- isopropyl-2H-pyrazol-3-yl)-4- methoxy-phenyl]-urea
  44		1-(4-Fluoro-phenyl)-3-[3-(2- isopropyl-2H-pyrazol-3-yl)-4- methoxy-phenyl]-urea
  45		1-[3-(4-Chloro-2-isopropyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-chloro-phenyl)-urea
  46		1-(3,4-Difluoro-phenyl)-3-[3-(2- isopropyl-2H-pyrazol-3-yl)-4- methoxy-phenyl]-urea
  47		1-(3-Chloro-4-fluoro-phenyl)-3-[3- (2-isopropyl-2H-pyrazol-3-yl)-4- methoxy-phenyl]-urea
  48		1-(2-Chloro-4-trifluoromethyl- phenyl)-3-[3-(2-isopropyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]- urea
  49		1-[3-(4-Bromo-2-isopropyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-chloro-phenyl)-urea
  50		1-[3-(4-Bromo-2-isopropyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-fluoro-phenyl)-urea
  51		1-[3-(4-Bromo-2-isopropyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3,4-difluoro-phenyl)-urea
  52		1-[3-(4-Bromo-2-isopropyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3-chloro-4-fluoro-phenyl)-urea
  53		1-[3-(4-Bromo-2-isopropyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (2-Chloro-4-trifluoromethyl- phenyl)-urea
  54		1-[3-(4-Cbloro-2-isoropyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-fluoro-phenyl)-urea
  55		1-[3-(4-Chloro-2-isopropyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3,4-difluoro-phenyl)-urea
  56		1-(3-Chloro-4-fluoro-phenyl)-3-[3- (4-Chloro-2-isopropyl-2H-pyrazol- 3-yl)-4-methoxy-phenyl]-urea
  57		1-[3-(4-Chloro-2-isopropyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (2-Chloro-4-trifluoromethyl- phenyl)-urea
  58		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-hydroxy-phenyl]-3- (4-chloro-phenyl)-urea
  59		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-isopropoxy- phenyl]-3-(4-chloro-phenyl)-urea
  60		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-isopropoxy- phenyl]-3-(4-fluoro-phenyl)-urea
  61		1-[4-Benzyloxy-3-(4-bromo-2- methyl-2H-pyrazol-3-yl)-phenyl]-3- (4-chloro-phenyl)-urea
  62		1-[4-Benzyloxy-3-(4-bromo-2- methyl-2H-pyrazol-3-yl)-phenyl]-3- (4-fluoro-phenyl)-urea
  63		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(4-chloro- benzyloxy)-phenyl]-3-(4-chloro- phenyl)-urea
  64		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(4-chloro- benzyloxy)-phenyl]-3-(4-fluoro- phenyl)-urea
  65		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-phenethyloxy- phenyl]-3-(4-fluoro-phenyl)-urea
  66		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-phenethyloxy- phenyl]-3-(4-chloro-phenyl)-urea
  67		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-ethoxy-phenyl]-3- (4-chloro-phenyl)-urea
  68		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-ethoxy-phenyl]-3- (4-fluoro-phenyl)-urea
  69		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(2-dimethylamino- ethoxy)-phenyl]-3-(4-chloro- phenyl)-urea
  70		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(2-dimethylamino- ethoxy)-phenyl]-3-(4-fluoro- phenyl)-urea
  71		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-chloro-phenyl)-thiourea
  72		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3-methoxy-phenyl)-urea
  73		1-Benzoyl-3-[3-(4-bromo-2-methyl- 2H-pyrazol-3-yl)-4-methoxy- phenyl]-urea
  74		1-Benzyl-3-[3-(4-bromo-2-methyl- 2H-pyrazol-3-yl)-4-methoxy- phenyl]-urea
  75		1-(4-Chloro-phenyl)-3-[4-methoxy- 3-(2-methyl-2H-pyrazol-3-yl)- phenyl]-urea
  76		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-isopropyl-phenyl)-urea
  77		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (2,4-dichloro-phenyl)-urea
  78		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- naphthalen-1-yl-urea
  79		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-chloro-2-trifluoromethyl- phenyl)-urea
  80		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-trifluoromethyl-phenyl)-urea
  81		1-(4-Bromo-phenyl)-3-[3-(4-chloro- 2-methyl-2H-pyrazol-3-yl)-4- methoxy-phenyl]-urea
  82		1-(3,5-Bis-trifluoromethyl-phenyl)- 3-[3-(4-chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-urea
  83		1-(3-Chloro-phenyl)-3-[3-(4-fluoro- 2-methyl-2H-pyrazol-3-yl)-4- methoxy-phenyl]-urea
  84		1-(4-Chloro-3-trifluoromethyl- phenyl)-3-[3-(4-fluoro-2-methyl- 2H-pyrazol-3-yl)-4-methoxy- phenyl]-urea
  85		1-(4-Bromo-phenyl)-3-[3-(4-fluoro- 2-methyl-2H-pyrazol-3-yl)-4- methoxy-phenyl]-urea
  86		1-[3-(4-Fluoro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-trifluoromethyl-phenyl)-thiourea
  87		1-[3-(4-Fluoro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-methoxy-phenyl)-urea
  88		1-(3-Acetyl-phenyl)-3-[3-(4-fluoro- 2-methyl-2H-pyrazol-3-yl)-4- methoxy-phenyl]-urea
  89		1-[3-(4-Fluoro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-trifluoromethyl-phenyl)-urea
  90		1-[3-(4-Fluoro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3-trifluoromethyl-phenyl)-urea
  91		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3-chloro-phenyl)-urea
  92		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3,4-difluoro-phenyl)-urea
  93		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3,5-difluoro-phenyl)-urea
  94		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- [3-(1-hydroxy-ethyl)-phenyl 3-urea
  95		1-Benzoyl-3-[3-(4-chloro-2-methyl- 2H-pyrazol-3-yl)-4-methoxy- phenyl]-urea
  96		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- [3-(1-hydroxyimino-ethyl)-phenyl]- urea
  97		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (2-fluoro-phenyl)-urea
  98		1-(4-Chloro-phenyl)-3-[3-(2- methyl-2H-pyrazol-3-yl)-4- trifluoromethoxy-phenyl]-urea
  99		1-(2,4-Difluoro-phenyl)-3-[3-(2- methyl-2H-pyrazol-3-yl)-4- trifluoromethoxy-phenyl]-urea
  100		1-(4-Fluoro-phenyl)-3-[3-(2- methyl-2H-pyrazol-3-yl)-4- trifluoromethoxy-phenyl]-urea
  101		1-[3-(2-Methyl-2H-pyrazol-3-yl)-4- trifluoromethoxy-phenyl]-3-(4- trifluoromethyl-phenyl)-urea
  102		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- [4-chloro-2-(4-methyl-piperazin-1- yl)-phenyl]-urea
  103		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-hydroxy-phenyl]-3- (2,4-difluoro-phenyl)-urea
  104		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-chloro-2-morpholin-4-yl- phenyl)-urea
  105		1-Benzyl-3-[3-(4-chloro-2-methyl- 2H-pyrazol-3-yl)-4-methoxy- phenyl]-urea
  106		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- [4-chloro-2-(4-methyl-piperidin-1- yl)-phenyl]-urea
  107		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-chloro-2-hydroxy-phenyl)-urea
  108		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-trifluoromethoxy- phenyl]-3-(4-chloro-phenyl)-urea
  109		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3-cyano-phenyl)-urea
  110		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (3-nitro-phenyl)-urea
  111		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- {4-chloro-2-[(2-dimethylamino- ethyl)-methyl-amino]-phenyl}-urea
  112		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- {4-chloro-2-[(3-dimethylamino- propyl)-methyl-amino]-phenyl}- urea
  113		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-trifluoromethoxy- phenyl]-3-(2,4-difluoro-phenyl)- urea
  114		1-(3-Acetyl-phenyl)-3-[3-(2- methyl-2H-pyrazol-3-yl)-4- trifluoromethoxy-phenyl]-urea
  115		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (2,2-difluoro-benzo[1,3]dioxol-5- yl)-urea
  116		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-methoxy-phenyl]-3- (4-dimethylamino-phenyl)-urea
  117		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(3-dimethylamino- propoxy)-phenyl]-3-(4-chloro- phenyl)-urea
  118		{2-(4-Bromo-2-methyl-2H-pyrazol- 3-yl)-4-[3-(4-chloro-phenyl)- ureido]-phenoxy}-acetic acid
  119		1-(4-Chloro-phenyl)-3-[4-hydroxy- 3-(2-methyl-2H-pyrazol-3-yl)- phenyl]-urea
  120		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-hydroxy-phenyl]-3- (2,4-difluoro-phenyl)-urea
  121		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-hydroxy-phenyl]-3- (4-chloro-phenyl)-urea
  122		1-(4-Chloro-phenyl)-3-[4-(3- dimethylamino-propoxy)-3-(2- methyl-2H-pyrazol-3-yl)-phenyl]- urea
  123		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(2-dimethylamino- ethoxy)-phenyl]-3-(2,4-difluoro- phenyl)-urea
  124		1-(2,4-Difluoro-phenyl)-3-[4-(3- dimethylamino-propoxy)-3-(2- methyl-2H-pyrazol-3-yl)-phenyl]- urea
  125		1-[4-(3-Dimethylamino-propoxy)-3- (2-methyl-2H-pyrazol-3-yl)- phenyl]-3-(4-fluoro-phenyl)-urea
  126		1-(4-Chloro-benzyl)-3-[4-(3- dimethylamino-propoxy)-3-(2- methyl-2H-pyrazol-3-yl)-phenyl]- urea
  127		1-(4-Chloro-phenyl)-3-[4-(2- dimethylamino-ethoxy)-3-(2- methyl-2H-pyrazol-3-yl)-phenyl]- urea
  128		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-(3-dimethylamino- propoxy)-phenyl]-3-(4-chloro- phenyl)-urea
  129		1-(2,2-Difluoro-benzo[1,3]dioxol-5- yl)-3-[4-(3-dimethylamino- propoxy)-3-(2-methyl-2H-pyrazol- 3-yl)-phenyl]-urea
  130		1-[4-(3-Dimethylamino-propoxy)-3- (2-methyl-2H-pyrazol-3-yl)- phenyl]-3-p-tolyl-urea
  131		1-[4-(3-Dimethylamino-propoxy)-3- (2-methyl-2H-pyrazol-3-yl)- phenyl]-3-(4-methoxy-phenyl)-urea
  132		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-(2-dimethylamino- ethoxy)-phenyl]-3-(2,4-difluoro- phenyl)-urea
  133		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-(3-dimethylamino- propoxy)-phenyl]-3-(2,4-difluoro- phenyl)-urea
  134		1-(3-Chloro-phenyl)-3-[4-(3- dimethylamino-propoxy)-3-(2- methyl-2H-pyrazol-3-yl)-phenyl]urea
  135		1-(3-Chloro-4-fluoro-phenyl)-3-[4- (3-dimethylamino-propoxy)-3-(2- methyl-2H-pyrazol-3-yl)-phenyl]- urea
  136		1-(3,4-Difluoro-phenyl)-3-[4-(3- dimethylamino-propoxy)-3-(2- methyl-2H-pyrazol-3-yl)-phenyl]- urea
  137		1-[4-(3-Dimethylamino-propoxy)-3- (2-methyl-2H-pyrazol-3-yl)- phenyl]-3-(4-trifluoromethyl- phenyl)-urea
  138		1-[4-(3-Dimethylamino-propoxy)-3- (2-methyl-2H-pyrazol-3-yl)- phenyl]-3-(2-fluoro-phenyl)-urea
  139		1-[4-(3-Dimethylamino-propoxy)-3- (2-methyl-2H-pyrazol-3-yl)- phenyl]-3-(2-fluoro-5-methyl- phenyl)-urea
  140		1-(2-Chloro-phenyl)-3-[4-(3- dimethylamino-propoxy)-3-(2- methyl-2H-pyrazol-3-yl)-phenyl]- urea
  141		1-(2,4-Difluoro-phenyl)-3-[4-(2- dimethylamino-ethoxy)-3-(2- methyl-2H-pyrazol-3-yl)-phenyl]- urea
  142		1-[4-(2-Dimethylamino-ethoxy)-3- (2-methyl-2H-pyrazol-3-yl)- phenyl]-3-(4-fluoro-phenyl)-urea
  143		1-(3-Acetyl-phenyl)-3-[4-(2- dimethylamino-ethoxy)-3-(2- methyl-2H-pyrazol-3-yl)-phenyl]- urea
  144		1-(2,2-Difluoro-benzo[1,3]dioxol-5- yl)-3-[4-(2-dimethylamino-ethoxy)- 3-(2-methyl-2H-pyrazol-3-yl) phenyl]-urea
  145		1-[4-(3-Dimethylamino-propoxy)-3- (2-methyl-2H-pyrazol-3-yl)- phenyl]-3-phenyl-urea
  146		1-[4-(2-Dimethylamino-ethoxy)-3- (2-methyl-2H-pyrazol-3-yl)- phenyl]-3-(3-methoxy-phenyl)-urea
  147		(2-{2-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-[3-(2,4-difluoro- phenyl)-ureido]-phenoxy}-ethyl)- carbamic acid tert-butyl ester
  148		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(3-dimethylamino- propoxy)-phenyl]-3-(3,4-difluoro- phenyl)-urea
  149		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(3-dimethylamino- propoxy)-phenyl]-3-(2-chloro- phenyl)-urea
  150		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(3-dimethylamino- propoxy)-phenyl]-3-(2-fluoro- phenyl)-urea
  151		1-(4-Chloro-phenyl)-3-[4-methoxy- 3-(2H-pyrazol-3-yl)-phenyl]-urea
  152		1-[3-(4-Bromo-2H-pyrazol-3-yl)-4- methoxy-phenyl]-3-(2,4-difluoro- phenyl)-urea
  153		1-(2,4-Difluoro-phenyl)-3-[4- methoxy-3-(2H-pyrazol-3-yl)- phenyl]-urea
  154		1-(4-Chloro-phenyl)-3-[4-hydroxy- 3-(1-methyl-1H-pyrazol-3-yl)- phenyl]-urea
  155		1-(4-Chloro-phenyl)-3-[4-(2- dimethylamino-ethoxy)-3-(4-fluoro- 2-methyl-2 H-pyrazol-3-yl)-phenyl]- urea
  156		1-[4-(2-Dimethylamino-ethoxy)-3- (4-fluoro-2-methyl-2H-pyrazol-3- yl)-phenyl]-3-(4-fluoro-phenyl)- urea
  157		1-(2,4-Difluoro-phenyl)-3-[4-(2- dimethylamino-ethoxy)-3-(4-fluoro- 2-methyl-2H-pyrazol-3-yl)-phenyl]- urea
  158		1-(4-Chloro-2-hydroxy-phenyl)-3- [4-(2-dimethylamino-ethoxy)-3-(4- fluoro-2-methyl-2H-pyrazol-3-yl)- phenyl]-urea
  159		1-[4-(2-Dimethylamino-ethoxy)-3- (4-fluoro-2-methyl-2H-pyrazol-3- yl)-phenyl]-3-(4-fluoro-2-hydroxy- phenyl)-urea
  160		1-(4-Chloro-3-hydroxy-phenyl)-3- [4-(2-dimethylamino-ethoxy)-3-(4- fluoro-2-methyl-2H-pyrazol-3-yl)- phenyl]-urea
  161		1-[4-(2-Dimethylamino-ethoxy)-3- (4-fluoro-2-methyl-2H-pyrazol-3- yl)-phenyl]-3-(4-fluoro-3-hydroxy- phenyl)-urea
  162		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-(2-dimethylamino- ethoxy)-phenyl]-3-(4-chloro- phenyl)-urea
  163		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-(2-dimethylamino- ethoxy)-phenyl]-3-(4-fluoro- phenyl)-urea
  164		1-(4-Chloro-2-hydroxy-phenyl)-3- [3-(4-chloro-2-methyl-2H-pyrazol- 3-yl)-4-(2-dimethylamino-ethoxy)- phenyl]-urea
  165		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-(2-dimethylamino- ethoxy)-phenyl]-3-(4-fluoro-2- hydroxy-phenyl)-urea
  166		1-(4-Chloro-3-hydroxy-phenyl)-3- [3-(4-chloro-2-methyl-2H-pyrazol- 3-yl)-4-(2-dimethylamino-ethoxy)- phenyl]-urea
  167		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-(2-dimethylamino- ethoxy)-phenyl]-3-(4-fluoro-3- hydroxy-phenyl)-urea
  168		1-(4-Chloro-2-hydroxy-phenyl)-3- [4-(2-dimethylamino-ethoxy)-3-(2- methyl-2H-pyrazol-3-yl)-phenyl]- urea
  169		1-[4-(2-Dimethylamino-ethoxy)-3- (2-methyl-2H-pyrazol-3-yl)- phenyl]-3-(4-fluoro-2-hydroxy- phenyl)-urea
  170		1-(4-Chloro-3-hydroxy-phenyl)-3- [4-(2-dimethylamino-ethoxy)-3-(2- methyl-2H-pyrazol-3-yl)-phenyl]- urea
  171		1-[4-(2-Dimethylamino-ethoxy)-3- (2-methyl-2H-pyrazol-3-yl)- phenyl]-3-(4-fluoro-3-hydroxy- phenyl)-urea
  172		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(2-dimethylamino- ethoxy)-phenyl]-3-(4-chloro-2- hydroxy-phenyl)-urea
  173		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(2-dimethylamino- ethoxy)-phenyl]-3-(4-fluoro-2- hydroxy-phenyl)-urea
  174		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(2-dimethylamino- ethoxy)-phenyl]-3-(4-chloro-3- hydroxy-phenyl)-urea
  175		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(2-dimethylamino- ethoxy)-phenyl]-3-(4-fluoro-3- hydroxy-phenyl)-urea
  176		1-(4-Chloro-phenyl)-3-[4-(3- dimethylamino-propoxy)-3-(4- fluoro-2-methyl-2H-pyrazol-3-yl)- phenyl]-urea
  177		1-[4-(3-Dimethylamino-propoxy)-3- (4-fluoro-2-methyl-2H-pyrazol-3- yl)-phenyl]-3-(4-fluoro-phenyl)- urea
  178		1-(2,4-Difluoro-phenyl)-3-[4-(3- dimethylamino-propoxy)-3-(4- fluoro-2-methyl-2H-pyrazol-3-yl)- phenyl]-urea
  179		1-(4-Chloro-2-hydroxy-phenyl)-3- [4-(3-dimethylamino-propoxy)-3- (4-fluoro-2-methyl-2H-pyrazol-3- yl)-phenyl]-urea
  180		1-[4-(3-Dimethylamino-propoxy)-3- (4-fluoro-2-methyl-2H-pyrazol-3- yl)-phenyl]-3-(4-fluoro-2-hydroxy- phenyl)-urea
  181		1-(4-Chloro-3-hydroxy-phenyl)-3- [4-(3-dimethylamino-propoxy)-3- (4-fluoro-2-methyl-2H-pyrazol-3- yl)-phenyl]-urea
  182		1-[4-(3-Dimethylamino-propoxy)-3- (4-fluoro-2-methyl-2H-pyrazol-3- yl)-phenyl]-3-(4-fluoro-3-hydroxy- phenyl)-urea
  183		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-(3-dimethylamino- propoxy)-phenyl]-3-(4-fluoro- phenyl)-urea
  184		1-(4-Chloro-2-hydroxy-phenyl)-3- [3-(4-chloro-2-methyl-2H-pyrazol- 3-yl)-4-(3-dimethylamino- propoxy)-phenyl]-urea
  185		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-(3-dimethylamino- propoxy)-phenyl]-3-(4-fluoro-2- hydroxy-phenyl)-urea
  186		1-(4-Chloro-3-hydroxy-phenyl)-3- [3-(4-chloro-2-methyl-2H-pyrazol- 3-yl)-4-(3-dimethylamino- propoxy)-phenyl]-urea
  187		1-[3-(4-Chloro-2-methyl-2H- pyrazol-3-yl)-4-(3-dimethylamino- propoxy)-phenyl]-3-(4-fluoro-3- hydroxy-phenyl)-urea
  188		1-(4-Chloro-2-hydroxy-phenyl)-3- [4-(3-dimethylamino-propoxy)-3- (2-methyl-2H-pyrazol-3-yl)- phenyl]-urea
  189		1-[4-(3-Dimethylamino-propoxy)-3- (2-methyl-2H-pyrazol-3-yl)- phenyl]-3-(4-fluoro-2-hydroxy- phenyl)-urea
  190		1-(4-Chloro-3-hydroxy-phenyl)-3- [4-(3-dimethylamino-propoxy)-3- (2-methyl-2H-pyrazol-3-yl)- phenyl]-urea
  191		1-[4-(3-Dimethylamino-propoxy)-3- (2-methyl-2H-pyrazol-3-yl)- phenyl]-3-(4-fluoro-3-hydroxy- phenyl)-urea
  192		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(3-dimethylamino- propoxy)-phenyl]-3-(4-fluoro- phenyl)-urea
  193		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(3-dimethylamino- propoxy)-phenyl]-3-(4-chloro-2- hydroxy-phenyl)-urea
  194		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(3-dimethylamino- propoxy)-phenyl]-3-(4-fluoro-2- hydroxy-phenyl)-urea
  195		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(3-dimethylamino- propoxy)-phenyl]-3-(4-chloro-3- hydroxy-phenyl)-urea
  196		1-[3-(4-Bromo-2-methyl-2H- pyrazol-3-yl)-4-(3-dimethylamino- propoxy)-phenyl]-3-(4-fluoro-3- hydroxy-phenyl)-urea

• Additionally, compounds of the present invention, such as Formula (I) and related Formulae, encompass all pharmaceutically acceptable salts, solvates, and particularly hydrates, thereof.
• The compounds of the Formula (I) of the present invention may be prepared according to the general synthetic schemes inFIGS. 17 through 21 andFIGS. 29 through 33 as well as relevant published literature procedures that are used by one skilled in the art. Exemplary reagents and procedures for these reactions appear hereinafter in the working Examples. Protection and deprotection may be carried out by procedures generally known in the art (see, for example, Greene, T. W. and Wuts, P. G. M., Protecting Groups in Organic Synthesis, 3^rdEdition, 1999 [Wiley]; incorporated herein by reference in its entirity).
• The present invention also encompasses diastereomers as well as optical isomers, e.g. mixtures of enantiomers including racemic mixtures, as well as individual enantiomers and diastereomers, which arise as a consequence of structural asymmetry in certain compounds of the invention. Separation of the individual isomers or selective synthesis of the individual isomers is accomplished by application of various methods which are well known to practitioners in the art.
• Constitutively Active Human 5HT_2A
• For convenience, the sequence information regarding the non-endogenous, constitutively active human 5-HT_2Aand identifiers are set forth in TABLE 4:

  	TABLE 4
  	IDENTIFIER	RECEPTOR	SEQ.ID.NO:	FIGURE
  	AP-3 cDNA	5-HT2A	27	6a
  	AP-3	5-HT2A	28	6b
  	AP-4 cDNA	5-HT2A	29	7a
  	AP-4	5-HT2A	30	7b

  
  Indications and Methods of Prophylaxis and/or Treatment
• In addition to the foregoing beneficial uses for the modulators of 5-HT_2Areceptor activity disclosed herein, the compounds disclosed herein are believed to be useful in the treatment of several additional diseases and disorders, and in the amelioration of symptoms thereof. Without limitation, these include the following:
• 1. Antiplatelet Therapies (5-HT_2AMediated Platelet Aggregation):
• Antiplatelet agents (antiplatelets) are prescribed for a variety of conditions. For example, in coronary artery disease they are used to help prevent myocardial infarction or stroke in patients who are at risk of developing obstructive blood clots (e.g., coronary thrombosis).
• In a myocardial infarction (heart attack), the heart muscle does not receive enough oxygen-rich blood as a result of a blockage in the coronary blood vessels. If taken while an attack is in progress or immediately afterward (preferably within 30 minutes), antiplatelets can reduce the damage to the heart.
• A transient ischemic attack (“TIA” or “mini-stroke”) is a brief interruption of oxygen flow to the brain due to decreased blood flow through arteries, usually due to an obstructing blood clot. Antiplatelet drugs have been found to be effective in preventing TIAs.
• Angina is a temporary and often recurring chest pain, pressure or discomfort caused by inadequate oxygen-rich blood flow (ischemia) to some parts of the heart. In patients with angina, antiplatelet therapy can reduce the effects of angina and the risk of myocardial infarction.
• Stroke is an event in which the brain does not receive enough oxygen-rich blood, usually due to blockage of a cerebral blood vessel by a blood clot. In high-risk patients, taking antiplatelets regularly has been found to prevent the formation blood clots that cause first or second strokes.
• Angioplasty is a catheter based technique used to open arteries obstructed by a blood clot. Whether or not stenting is performed immediately after this procedure to keep the artery open, antiplatelets can reduce the risk of forming additional blood clots following the procedure(s).
• Coronary bypass surgery is a surgical procedure in which an artery or vein is taken from elsewhere in the body and grafted to a blocked coronary artery, rerouting blood around the blockage and through the newly attached vessel. After the procedure, antiplatelets can reduce the risk of secondary blood clots.
• Atrial fibrillation is the most common type of sustained irregular heart rhythm (arrythmia). Atrial fibrillation affects about two million Americans every year. In atrial fibrillation, the atria (the heart's upper chambers) rapidly fire electrical signals that cause them to quiver rather than contract normally. The result is an abnormally fast and highly irregular heartbeat. When given after an episode of atrial fibrillation, antiplatelets can reduce the risk of blood clots forming in the heart and traveling to the brain (embolism).
• 5-HT_2Areceptors are expressed on smooth muscle of blood vessels and 5-HT secreted by activated platelets causes vasoconstriction as well as activation of additional platelets during clotting. There is evidence that a 5-HT_2Ainverse agonist will inhibit platelet aggregation and thus be a potential treatment as an antiplatelet therapy (see Satimura, K, et al., Clin Cardiol Jan. 25, 2002 (1):28-32; and Wilson, H. C et al., Thromb Haemost Sep. 2, 1991;66(3):355-60).
• The 5-HT_2Ainverse agonists disclosed herein provide beneficial improvement in microcirculation to patients in need of antiplatelet therapy by antagonizing the vasoconstrictive products of the aggregating platelets in, for example and not limitation, the indications described above. Accordingly, in some embodiments, the present invention provides methods for reducing platelet aggregation in a patient in need thereof comprising administering to said patient a composition comprising a 5-HT_2Ainverse agonist disclosed herein. In further embodiments, the present invention provides methods for treating coronary artery disease, myocardial infarction, transient ischemic attack, angina, stroke, atrial fibrillation, or a symptom of any of the foregoing in a patient in need of said treatment, comprising administering to said patient a composition comprising a 5-HT_2Ainverse agonist disclosed herein.
• In further embodiments, the present invention provides methods for reducing risk of blood clot formation in an angioplasty or coronary bypass surgery patient, or a patient suffering from atrial fibrillation, comprising administering to a said patient a composition comprising a 5-HT_2Ainverse agonist disclosed herein at a time where such risk exists.
• 2. Asthma
• It has been suggested that 5-HT (5-hydroxytryptamine) plays a role in the pathophysiology of acute asthma (see Cazzola, M. and Matera, M. G., TIPS, 2000, 21, 13; and De Bie, J. J. et al., British J. Pharm., 1998, 124, 857-864). The compounds of the present invention disclosed herein are useful in the treatment of asthma, and the treatment of the symptoms thereof. Accordingly, in some embodiments, the present invention provides methods for treating asthma in a patient in need of said treatment, comprising administering to said patient a composition comprising a 5-HT_2Ainverse agonist disclosed herein. In further embodiments, methods are provided for treating a symptom of asthma in a patient in need of said treatment, comprising administering to said patient a composition comprising a 5-HT_2Ainverse agonist disclosed herein.
• 3. Agitation
• Agitation is a well-recognized behavioral syndrome with a range of symptoms, including hostility, extreme excitement, poor impulse control, tension and uncooperativeness (See Cohen-Mansfield J, and Billig, N., (1986), Agitated Behaviors in the Elderly. I. A Conceptual Review.JAm Geriatr Soc 34(10): 711-721).
• Agitation is a common occurrence in the elderly and often associated with dementia such as those caused by Alzheimer's disease, Lewy Body, Parkinson's, and Huntington's, which are degenerative diseases of the nervous system and by diseases that affect blood vessels, such as stroke, or multi-infarct dementia, which is caused by multiple strokes in the brain can also induce dementia. Alzheimer's disease accounts for approximately 50 to 70% of all dementias (See Koss E, et al., (1997), Assessing patterns of agitation in Alzheimer's disease patients with the Cohen-Mansfield Agitation Inventory. The Alzheimer's Disease Cooperative Study. Alzheimer Dis Assoc Disord 11(suppl 2):S45-S50).
• An estimated five percent of people aged 65 and older and up to 20 percent of those aged 80 and older are affected by dementia; of these sufferers, nearly half exhibit behavioral disturbances, such as agitation, wandering and violent outbursts.
• Agitated behaviors can also be manifested in cognitively intact elderly people and by those with psychiatric disorders other than dementia.
• Agitation is often treated with antipsychotic medications such as haloperidol in nursing home and other assisted care settings. There is emerging evidence that agents acting at the 5-HT_2Areceptors in the brain have the effects of reducing agitation in patients, including Alzheimer's dementia (See Katz, I. R., et al.,JClin Psychiatry February 1999, 60(2):107-115; and Street, J. S., et al., Arch Gen Psychiatry October 2000 57(10):968-976).
• The compounds of the invention disclosed herein are useful for treating agitation and symptoms thereof. Thus, in some embodiments, the present invention provides methods for treating agitation in a patient in need of such treatment comprising administering to said patient a composition comprising a 5-HT_2Ainverse agonist disclosed herein. In some embodiments, the agitation is due to a psychiatric disorder other than dementia. In some embodiments, the present invention provides methods for treatment of agitation or a symptom thereof in a patient suffering from dementia comprising administering to said patient a composition comprising a 5-HT_2Ainverse agonist disclosed herein. In some embodiments of such methods, the dementia is due to a degenerative disease of the nervous system, for example and without limitation, Alzheimers disease, Lewy Body, Parkinson's disease, and Huntington's disease, or dementia due to diseases that affect blood vessels, including, without limitation, stroke and multi-infarct dementia. In some embodiments, methods are provided for treating agitation or a symptom thereof in a patient in need of such treatment, where the patient is a cognitively intact elderly patient, comprising administering to said patient a composition comprising a 5-HT_2Ainverse agonist disclosed herein.
• 4. Add-On Therapy to Haloperidol in the Treatment of Schizophrenia and other Disorders:
• Schizophrenia is a psychopathic disorder of unknown origin, which usually appears for the first time in early adulthood and is marked by a number of characteristics, psychotic symptoms, progression, phasic development and deterioration in social behavior and professional capability in the region below the highest level ever attained. Characteristic psychotic symptoms are disorders of thought content (multiple, fragmentary, incoherent, implausible or simply delusional contents or ideas of persecution) and of mentality (loss of association, flight of imagination, incoherence up to incomprehensibility), as well as disorders of perceptibility (hallucinations), of emotions (superficial or inadequate emotions), of self-perception, of intentions and impulses, of interhuman relationships, and finally psychomotoric disorders (such as catatonia). Other symptoms are also associated with this disorder. (See, American Statistical and Diagnostic Handbook).
• Haloperidol (Haldol) is a potent dopamine D2 receptor antagonist. It is widely prescribed for acute schizophrenic symptoms, and is very effective for the positive symptoms of schizophrenia. However, Haldol is not effective for the negative symptoms of schizophrenia and may actually induce negative symptoms as well as cognitive dysfunction. In accordance with some methods of the invention, adding a 5-HT_2Ainverse agonist concomitantly with Haldol will provide benefits including the ability to use a lower dose of Haldol without losing its effects on positive symptoms, while reducing or eliminating its inductive effects on negative symptoms, and prolonging relapse to the patient's next schizophrenic event.
• Haloperidol is used for treatment of a variety of behavioral disorders, drug induced psychosis, excitative psychosis, Gilles de la Tourette's syndrome, manic disorders, psychosis (organic and NOS), psychotic disorder, psychosis, schizophrenia (acute, chronic and NOS). Further uses include in the treatment of infantile autism, huntington's chorea, and nausea and vomiting from chemotherapy and chemotherapeutic antibodies. Administration of 5-HT_2Ainverse agonists disclosed herein with haloperidol also will provide benefits in these indications.
• In some embodiments, the present invention provides methods for treating a behavioral disorder, drug induced psychosis, excitative psychosis, Gilles de la Tourette's syndrome, manic disorders, psychosis (organic and NOS), psychotic disorder, psychosis, schizophrenia (acute, chronic and NOS) comprising administering to said patient a dopamine D2 receptor antagonist and a 5-HT_2Ainverse agonist disclosed herein.
• In some embodiments, the present invention provides methods for treating a behavioral disorder, drug induced psychosis, excitative psychosis, Gilles de la Tourette's syndrome, manic disorders, psychosis (organic and NOS), psychotic disorder, psychosis, schizophrenia (acute, chronic and NOS) comprising administering to said patient haloperidol and a 5-HT_2Ainverse agonist disclosed herein.
• In some embodiments, the present invention provides methods for treating infantile autism, huntington's chorea, or nausea and vomiting from chemotherapy or chemotherapeutic antibodies comprising administering to said patient a dopamine D2 receptor antagonist and a 5-HT_2Ainverse agonist disclosed herein.
• In some embodiments, the present invention provides methods for treating infantile autism, huntington's chorea, or nausea and vomiting from chemotherapy or chemotherapeutic antibodies comprising administering to said patient haloperidol and a 5-HT_2Ainverse agonist disclosed herein.
• In further embodiments, the present invention provides methods for treating schizophrenia in a patient in need of said treatment comprising administering to said patient a dopamine D2 receptor antagonist and a 5-HT_2Ainverse agonist disclosed herein. Preferably, the dopamine D2 receptor antagonist is haloperidol.
• The administration of the dopamine D2 receptor antagonist can be concomitant with administration of the 5-HT_2Ainverse agonist, or they can be administered at different times. Those of skill in the art will easily be able to determine appropriate dosing regimes for the most efficacious reduction or elimination of deleterions haloperidol effects. In some embodiments, haloperidol and the 5-HT_2Ainverse agonist are administered in a single dosage form, and in other embodiments, they are administered in separate dosage forms.
• The present invention further provides methods of alleviating negative symptoms of schizophrenia induced by the administration of haloperidol to a patient suffering from said schizophrenia, comprising administering to said patient a 5-HT_2Ainverse agonist as disclosed herein.
• 5. Sleep Disorders
• It is reported in the National Sleep Foundation's 2002 Sleep In America Poll, more than one-half of the adults surveyed (58%) report having experienced one or more symptoms of insomnia at least a few nights a week in the past year. Additionally, about three in ten (35%) say they have experienced insomnia-like symptoms every night or almost every night.
• The normal sleep cycle and sleep architecture can be disrupted by a variety of organic causes as well as environmental influences. According to the International Classification of Sleep Disorders, there are over 80 recognized sleep disorders. Of these, compounds of the present invention are effective, for example, in any one or more of the following sleep disorders (ICSD—International Classification of Sleep Disorders: Diagnostic and Coding Manual. Diagnostic Classification Steering Committee, American Sleep Disorders Association, 1990):
• A. Dyssomnias
• a. Intrinsic Sleep Disorders:
• Psychophysiological insomnia, Sleep state misperception, Idiopathic insomnia, Obstructive sleep apnea syndrome, Central sleep apnea syndrome, Central alveolar hypoventilation syndrome, Periodic limb movement disorder, Restless leg syndrome and Intrinsic sleep disorder NOS.
• b. Extrinsic Sleep Disorders:
• Inadequate sleep hygiene, Environmental sleep disorder, Altitude insomnia, Adjustment sleep disorder, Insufficient sleep syndrome, Limit-setting sleep disorder, SleepOnset association disorder, Nocturnal eating (drinking) syndrome, Hypnotic dependent sleep disorder, Stimulant-dependent sleep disorder, Alcohol-dependent sleep disorder, Toxin-induced sleep disorder and Extrinsic sleep disorder NOS.
• c. Circadian Rhythm Sleep Disorders:
• Time zone change (jet lag) syndrome, Shift work sleep disorder, Irregular sleep-wake pattern, Delayed sleep phase syndrome, Advanced sleep phase syndrome, Non-24-hour sleep-wake disorder and Circadian rhythm sleep disorder NOS.
• B. Parasomnias
• a. Arousal Disorders:
• Confusional arousals, Sleepwalking and Sleep terrors.
• b. Sleep-Wake Transition Disorders:
• Rhythmic movement disorder, Sleep starts, Sleep talking and Nocturnal leg cramps.
• C. Sleep Disorders Associated with Medical/Psychiatric Disorders
• a. Associated with Mental Disorders:
• Psychoses, Mood disorders, Anxiety disorders, Panic disorders and Alcoholism.
• b. Associated with Neurological Disorders:
• Cerebral degenerative disorders, Dementia, Parkinsonism, Fatal familial insomnia, Sleep-related epilepsy, Electrical status epilepticus of sleep and Sleep-related headaches.
• c. Associated with other Medical Disorders:
• Sleeping sickness, Nocturnal cardiac ischemia, Chronic obstructive pulmonary disease, Sleep-related asthma, Sleep-related gastroesophageal reflux, Peptic ulcer disease, Fibrositis syndrome, Osteoarthritis, Rheumatoid arthritis, Fibromyalgia and Post-surgical.
• The effects of sleep deprivation are more than excessive daytime sleepiness. Chronic insomniacs report elevated levels of stress, anxiety, depression and medical illnesses (National Institutes of Health, National Heart, Lung, and Blood Institute,Insomnia Facts Sheet,October 1995). Preliminary evidence suggests that having a sleep disorder that causes significant loss of sleep may contribute to increased susceptibility to infections due to immunosuppression, cardiovascular complications such as hypertension, cardiac arrhythmias, stroke, and myocardial infarction, comprimised glucose tolerance, increased obesity and metabolic syndrome. Compounds of the present invention are useful to prevent or alleviate these complications by improving sleep quality.
• The most common class of medications for the majority of sleep disorders are the benzodiazepines, but the adverse effect profile of benzodiazepines include daytime sedation, diminished motor coordination, and cognitive impairments. Furthermore, the National Institutes of Health Consensus conference on Sleeping Pills and Insomnia in 1984 have developed guidelines discouraging the use of such sedative-hypnotics beyond 4-6 weeks because of concerns raised over drug misuse, dependency, withdrawal and rebound insomnia. Therefore, it is desirable to have a pharmacological agent for the treatment of insomnia, which is more effective and/or has fewer side effects than those currently used. In addition, benzodiazepines are used to induce sleep, but have little to no effect on the maintenance of sleep, sleep consolidation or slow wave sleep. Therefore, sleep maintenance disorders are not currently well treated.
• Clinical studies with agents of a similar mechanism of action as are compounds of the present invention have demonstrated significant improvements on objective and subjective sleep parameters in normal, healthy volunteers as well as patients with sleep disorders and mood disorders [Sharpley A L, et al. Slow Wave Sleep in Humans: Role of 5HT_2Aand 5HT_2CReceptors.Neuropharmacology,1994, Vol. 33(3/4):467-71; Winokur A, et al. Acute Effects of Mirtazapine on Sleep Continuity and Sleep Architecture in Depressed Patients: A Pilot Study.Soc of Biol Psych,2000, Vol.48:75-78; and Landolt H P, et al. Serotonin-2 Receptors and Human Sleep: Effect of Selective Antagonist on EEG Power Spectra.Neuropsychopharmacology,1999, Vol. 21(3):455-66].
• Some sleep disorders are sometimes found in conjunction with other conditions and accordingly those conditions are treatable by compounds of Formula (I). For example but not limiting, patients suffering from mood disorders typically suffer from a sleep disorder that can be treatable by compounds of Formula (I). Having one pharmacological agent which treats two or more existing or potential conditions, as does the present invention, is more cost effective, leads to better compliance and has fewer side effects than taking two or more agents.
• It is an object of the present invention to provide a therapeutic agent for the use in treating Sleep Disorders. It is another object of the present invention to provide one pharmaceutical agent, which may be useful in treating two or more conditions wherein one of the conditions is a sleep disorder. Compounds of the present invention described herein may be used alone or in combination with a mild sleep inducer (i.e. antihistamine).
• Sleep Architecture:
• Sleep comprises two physiological states: Non rapid eye movement (NREM) and rapid eye movement (REM) sleep. NREM sleep consists of four stages, each of which is characterized by progressively slower brain wave patterns, with the slower patterns indicating deeper sleep. So called delta sleep, stages 3 and 4 of NREM sleep, is the deepest and most refreshing type of sleep. Many patients with sleep disorders are unable to adequately achieve the restorative sleep ofstages 3 and 4. In clinical terms, patients' sleep patterns are described as fragmented, meaning the patient spends a lot of time alternating betweenstages 1 and 2 (semi-wakefulness) and being awake and very little time in deep sleep. As used herein, the term “fragmented sleep architecture” means an individual, such as a sleep disorder patient, spends the majority of their sleep time in NREM sleep stages 1 and 2, lighter periods of sleep from which the individual can be easily aroused to a Waking state by limited external stimuli. As a result, the individual cycles through frequent bouts of light sleep interrupted by frequent awakenings throughout the sleep period. Many sleep disorders are characterized by a fragmented sleep architecture. For example, many elderly patients with sleep complaints have difficulty achieving long bouts of deep refreshing sleep (NREM stages 3 and 4) and instead spend the majority of their sleep time in NREM sleep stages 1 and 2.
• In contrast to fragmented sleep architecture, as used herein the term “sleep consolidation” means a state in which the number of NREM sleep bouts, particularly Stages 3 and 4, and the length of those sleep bouts are increased, while the number and length of waking bouts are decreased. In essence, the architecture of the sleep disorder patient is consolidated to a sleeping state with increased periods of sleep and fewer awakenings during the night and more time is spent in slow wave sleep (Stages 3 and 4) withfewer oscillation Stage 1 and 2 sleep. Compounds of the present invention as described are effective in consolidating sleep patterns so that the patient with previously fragmented sleep can now achieve restorative, delta-wave sleep for longer, more consistent periods of time.
• As sleep moves fromstage 1 into later stages, heart rate and blood pressure drop, metabolic rate and glucose consumption fall, and muscles relax. In normal sleep architecture, NREM sleep makes up about 75% of total sleep time;stage 1 accounting for 5-10% of total sleep time,stage 2 for about 45-50%,stage 3 approximately 12%, and stage 4 13-15%. About 90 minutes after sleep onset, NREM sleep gives way to the first REM sleep episode of the night. REM makes up approximately 25% of total sleep time. In contrast to NREM sleep, REM sleep is characterized by high pulse, respiration, and blood pressure, as well as other physiological patterns similar to those seen in the active waking stage. Hence, REM sleep is also known as “paradoxical sleep.” Sleep onset occurs during NREM sleep and takes 10-20 minutes in healthy young adults. The four stages of NREM sleep together with a REM phase form one complete sleep cycle that is repeated throughout the duration of sleep, usually four or five times. The cyclical nature of sleep is regular and reliable; a REM period occurs about every 90 minutes during the night. However, the first REM period tends to be the shortest, often lasting less than 10 minutes, whereas the later REM periods may last up to 40 minutes. With aging, the time between retiring and sleep onset increases and the total amount of night-time sleep decreases because of changes in sleep architecture that impair sleep maintenance as well as sleep quality. Both NREM (particularly stages 3 and 4) and REM sleep are reduced. However,stage 1 NREM sleep, which is the lightest sleep, increases with age.
• As disclosed herein, compounds of the present invention also have the ability to increase delta power (seeFIG. 28). As used herein, the term “delta power” means a measure of the duration of EEG activity in the 0.5 to 3.5 Hz range during NREM sleep and is thought to be a measure of deeper, more refreshing sleep. Delta power is hypothesized to be a measure of a theoretical process called Process S and is thought to be inversely related to the amount of sleep an individual experiences during a given sleep period. Sleep is controlled by homeostatic mechanisms; therefore, the less one sleeps the greater the drive to sleep. It is believed that Process S builds throughout the wake period and is discharged most efficiently during delta power sleep. Delta power is a measure of the magnitude of Process S prior to the sleep period. The longer one stays awake, the greater. Process S or drive to sleep and thus the greater the delta power during NREM sleep. However, individuals with sleep disorders have difficulty achieving and maintaining delta wave sleep, and thus have a large build-up of Process S with limited ability to discharge this buildup during sleep. 5-HT2_Ainverse agonists tested preclinically and clinically mimic the effect of sleep deprivation on delta power, suggesting that subjects with sleep disorders treated with a 5-HT2_Ainverse agonist will be able to achieve deeper more refreshing sleep. These same effects have not been observed with currently marketed pharmacotherapies. In addition, currently marketed pharmacotherapies for sleep have side effects such as hangover effects or addiction that are associated with the GABA receptor. 5-HT2_Ainverse agonist do not target the GABA receptor and so these side effects are not a concern.
• Subjective and Objective Determinations of Sleep Disorders:
• There are a number of ways to determine whether the onset, duration or quality of sleep (e.g. non-restorative or restorative sleep) is impaired or improved. One method is a subjective determination of the patient, e.g., do they feel drowsy or rested upon waking. Other methods involve the observation of the patient by another during sleep, e.g., how long it takes the patient to fall asleep, how many times does the patient wake up during the night, how restless is the patient during sleep, etc. Another method is to objectively measure the stages of sleep using polysomnography.
• Polysomnography is the monitoring of multiple electrophysiological parameters during sleep and generally includes measurement of EEG activity, electroculographic activity and electromyographic activity, as well as other measurements. These results, along with observations, can measure not only sleep latency (the amount of time required to fall asleep), but also sleep continuity (overall balance of sleep and wakefulness) and sleep consolidation (percent of sleeping time spent in delta-wave or restorative sleep) which may be an indication of the quality of sleep.
• There are five distinct sleep stages, which can be measured by polysomnography: rapid eye movement (REM) sleep and four stages of non-rapid eye movement (NREM) sleep (stages 1, 2, 3 and 4).Stage 1 NREM sleep is a transition from wakefulness to sleep and occupies about 5% of time spent asleep in healthy adults.Stage 2 NREM sleep, which is characterized by specific EEG waveforms (sleep spindles and K complexes), occupies about 50% of time spent asleep.Stages 3 and 4 NREM sleep (also known collectively as slow-wave sleep and delta-wave sleep) are the deepest levels of sleep and occupy about 10-20% of sleep time. REM sleep, during which the majority of vivid dreams occur, occupies about 20-25% of total sleep.
• These sleep stages have a characteristic temporal organization across the night. NREM stages 3 and 4 tend to occur in the first one-third to one-half of the night and increase in duration in response to sleep deprivation. REM sleep occurs cyclically through the night. Alternating with NREM sleep about every 80-100 minutes. REM sleep periods increase in duration toward the morning. Human sleep also varies characteristically across the life span. After relative stability with large amounts of slow-wave sleep in childhood and early adolescence, sleep continuity and depth deteriorate across the adult age range. This deterioration is reflected by increased wakefulness andstage 1 sleep and decreasedstages 3 and 4 sleep.
• In addition, the compounds of the invention can be useful for the treatment of the sleep disorders characterized by excessive daytime sleepiness such as narcolepsy. Inverse agonists at the serotonin 5HT_2Areceptor improve the quality of sleep at nightime which can decrease excessive daytime sleepiness.
• Accordingly, another aspect of the present invention relates to the therapeutic use of compounds of the present invention for the treatment of Sleep Disorders. Compounds of the present invention are potent inverse agonists at the serotonin 5HT_2Areceptor and are effective in the treatment of Sleep Disorders by promoting one or more of the following: reducing the sleep onset latency period (measure of sleep induction), reducing the number of nighttime awakenings, and prolonging the amount of time in delta-wave sleep (measure of sleep quality enhancement and sleep consolidation) without effecting REM sleep. In addition, compounds of the present invention are effective either as a monotherapy or in combination with sleep inducing agents, for example but not limiting, antihistamines.
• 6. Diabetic-Related Pathologies:
• Although hyperglycemia is the major cause for the pathogenesis of diabetic complications such as diabetic peripheral neuropathy (DPN), diabetic nephropathy (DN) and diabetic retinopathy (DR), increased plasma serotonin concentration in diabetic patients has also been implicated to play a role in disease progression (Pietraszek, M. H., et al.Thrombosis Res.1992, 66(6), 765-74; and Andrzejewska-Buczko J, et al.,Klin Oczna.1996; 98(2), 101-4). Serotonin is believed to play a role in vasospasm and increased platelet aggregability. Improving microvascular blood flow is able to benefit diabetic complications.
• A recent study by Cameron and Cotter inNaunyn Schmiedebergs Arch Pharmacol.June 2003; 367(6):607-14, used a⁵HT_2Aantagonist experimental drug AT-1015, and other non-specific 5HT_2Aantagonists including ritanserin and sarpogrelate. These studies found that all three drugs were able to produce a marked correction (82.6-99.7%) of a 19.8% sciatic motor conduction deficit in diabetic rats. Similarly, 44.7% and 14.9% reductions in sciatic endoneurial blood flow and saphenous sensory conduction velocity were completely reversed.
• In a separate patient study, sarogrelate was evaluated for the prevention of the development or progression of diabetic nephropathy (Takahashi, T., et al.,Diabetes Res Clin Pract. November2002; 58(2):123-9). In the trial of 24 months of treatment, sarpogrelate significantly reduced urinary albumin excretion level.
• 7. Glaucoma
• Topical ocular administration of 5-HT2 receptor antagonists result in a decrease in intra ocular pressure (IOP) in monkeys (Chang et al., J. Ocul Pharmacol 1 :137-147 (1985)) and humans (Mastropasqua et al., Acta Ophthalmol Scand Suppl 224:24-25 (1997)) indicating utility for similar compounds such as 5-HT2_Ainverse agonists in the treatment of ocular hypertensin associated with glaucoma. The 5-HT2 receptor antagonist ketanserin (Mastropasqua supra) and sarpogrelate (Takenaka et al., Investig Ophthalmol Vis Sci 36:S734 (1995)) have been shown to significantly lower IOP in glaucoma patients.
• Representative Methods of the Invention:
• One aspect of the present invention encompasses methods for modulating the activity of a 5HT_2Aserotonin receptor by contacting the receptor with a compound according to any of the embodiments described herein or a pharmaceutical composition.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of platelet aggregation in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of an indication selected from the group consisting of coronary artery disease, myocardial infarction, transient ischemic attack, angina, stroke, and atrial fibrillation in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of reducing the risk of blood clot formation in an angioplasty or coronary bypass surgery individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of reducing the risk of blood clot formation in an individual suffering from atrial fibrillation, comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of asthma in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of a symptom of asthma in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of agitation or a symptom thereof in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition. In some embodiments, the individual is a cognitively intact elderly individual.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of agitation or a symptom thereof in an individual suffering from dementia comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition. In some embodiments, the dementia is due to a degenerative disease of the nervous system. In some embodiments, the dementia is Alzheimers disease, Lewy Body, Parkinson's disease or Huntington's disease. In some embodiments, the dementia is due to diseases that affect blood vessels. In some embodiments, the dementia is due to stroke or multi-infarct dementia.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of an individual suffering from at least one of the indications selected from the group consisting of behavioral disorder, drug induced psychosis, excitative psychosis, Gilles de la Tourette's syndrome, manic disorder, organic or NOS psychosis, psychotic disorder, psychosis, acute schizophrenia, chronic schizophrenia and NOS schizophrenia comprising administering to said individual in need thereof a therapeutically effective amount of a dopamine D2 receptor antagonist and a compound according to any of the embodiments described herein or a pharmaceutical composition. In some embodiments, the dopamine D2 receptor antagonist is haloperidol.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of an individual with infantile autism, Huntington's chorea, or nausea and vomiting from chemotherapy or chemotherapeutic antibodies comprising administering to said individual in need thereof a therapeutically effective amount of a dopamine D2 receptor antagonist and a compound according to any of the embodiments described herein or a pharmaceutical composition. In some embodiments, the dopamine D2 receptor antagonist is haloperidol.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of schizophrenia in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a dopamine D2 receptor antagonist and a compound according to any of the embodiments described herein or a pharmaceutical composition. In some embodiments, the dopamine D2 receptor antagonist is haloperidol.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of alleviating negative symptoms of schizophrenia induced by the administration of haloperidol to an individual suffering from said schizophrenia, comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition. In some embodiments, the haloperidol and the compound or pharmaceutical composition are administered in separate dosage forms. In some embodiments, the haloperidol and the compound or pharmaceutical composition are administered in a single dosage form.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of a sleep disorder in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition.
• In some embodiments, the sleep disorder is a dyssomnia. In some embodiments, the dyssomnia is selected from the group consisting of psychophysiological insomnia, sleep state misperception, idiopathic insomnia, obstructive sleep apnea syndrome, central sleep apnea syndrome, central alveolar hypoventilation syndrome, periodic limb movement disorder, restless leg syndrome, inadequate sleep hygiene, environmental sleep disorder, altitude insomnia, adjustment sleep disorder, insufficient sleep syndrome, limit-setting sleep disorder, sleep-onset association disorder, nocturnal eating or drinking syndrome, hypnotic dependent sleep disorder, stimulant-dependent sleep disorder, alcohol-dependent sleep disorder, toxin-induced sleep disorder, time zone change (et lag) syndrome, shift work sleep disorder, irregular sleep-wake pattern, delayed sleep phase syndrome, advanced sleep phase syndrome, and non-24-hour sleep-wake disorder.
• In some embodiments, the sleep disorder is a parasomnia. In some embodiments, the parasomnia is selected from the group consisting of confusional arousals, sleepwalking and sleep terrors, rhythmic movement disorder, sleep starts, sleep talking and nocturnal leg cramps. In some embodiments, the sleep disorder is characterized by excessive daytime sleepiness such as narcolepsy.
• In some embodiments, the sleep disorder is associated with a medical or psychiatric disorder. In some embodiments, the medical or psychiatric disorder is selected from the group consisting of psychoses, mood disorders, anxiety disorders, panic disorders, alcoholism, cerebral degenerative disorders, dementia, parkinsonism, fatal familial insomnia, sleep-related epilepsy, electrical status epilepticus of sleep, sleep-related headaches, sleeping sickness, nocturnal cardiac ischemia, chronic obstructive pulmonary disease, sleep-related asthma, sleep-related gastroesophageal reflux, peptic ulcer disease, fibrositis syndrome, osteoarthritis, rheumatoid arthritis, fibromyalgia and post-surgical sleep disorder.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of a diabetic-related disorder in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according to any of the embodiments described herein or a pharmaceutical composition.
• In some embodiments, the diabetic-related disorder is diabetic peripheral neuropathy.
• In some embodiments, the diabetic-related disorder is diabetic nephropathy.
• In some embodiments, the diabetic-related disorder is diabetic retinopathy.
• One aspect of the present invention encompasses methods for prophylaxis or treatment of glaucoma or other diseases of the eye with abnormal intraocular pressure.
• One aspect of the present invention encompasses processes for preparing a composition comprising admixing a compound according any embodiments described herein and pharmaceutically acceptable carrier.
• One aspect of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is platelet aggregation.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is selected from the group consisting of coronary artery disease, myocardial infarction, transient ischemic attack, angina, stroke, and atrial fibrillation.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is a blood clot formation in an angioplasty or coronary bypass surgery individual.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is a blood clot formation in an individual suffering from atrial fibrillation.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is asthma.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is a symptom of asthma.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is agitation or a symptom thereof in an individual. In some embodiments the individual is a cognitively intact elderly individual.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is agitation or a symptom thereof in an individual suffering from dementia. In some embodiments the dementia is due to a degenerative disease of the nervous system. In some embodiment the dementia is Alzheimers disease, Lewy Body, Parkinson's disease, or Huntington's disease. In some embodiments the dementia is due to diseases that affect blood vessels. In some embodiments the dementia is due to stroke or multi-infract dementia.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder further comprising a dopamine D2 receptor antagonist wherein the disorder is selected from the group consisting of a behavioral disorder, drug induced psychosis, excitative psychosis, Gilles de la Tourette's syndrome, manic disorder, organic or NOS psychosis, psychotic disorder, psychosis, acute schizophrenia, chronic schizophrenia and NOS schizophrenia. In some embodiments the dopamine D2 receptor antagonist is haloperidol.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder further comprising a dopamine D2 receptor antagonist wherein the disorder is infantile autism, Huntington's chorea, or nausea and vomiting from chemotherapy or chemotherapeutic antibodies. In some embodiments the dopamine D2 receptor antagonist is haloperidol.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder further comprising a dopamine D2 receptor antagonist wherein the disorder is schizophrenia. In some embodiments the dopamine D2 receptor antagonist is haloperidol.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the disorder is a negative symptom or symptoms of schizophrenia induced by the administration of haloperidol.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the haloperidol and the compound or pharmaceutical composition are administered in separate dosage forms.
• One embodiment of the present invention is the use of a compound for the production of a medicament for use in the prophylaxis or treatment of a 5HT_2Amediated disorder wherein the haloperidol and the compound or pharmaceutical composition are administered in a single dosage form.
• One aspect of the present invention are compounds according to any of the embodiments described herein for use in a method of treatment of the human or animal body by therapy.
• One aspect of the present invention are compounds according to any of the embodiments described herein for use in a method for the prophylaxis or treatment of a 5HT_2Amediated disorder, as described herein, in the human or animal body by therapy.
• One aspect of the present invention are compounds according to any of the embodiments described herein for use in a method for the prophylaxis or treatment of a sleep disorder, as described herein, in the human or animal body by therapy.
• One aspect of the present invention are compounds according to any of the embodiments described herein for use in a method for the prophylaxis or treatment of platelet aggregation in the human or animal body by therapy.
• Pharmaceutical Composition
• A further aspect of the present invention pertains to pharmaceutical compositions comprising one or more compounds as described herein and one or more pharmaceutically acceptable carriers. Some embodiments pertain to pharmaceutical compositions comprising a compound of the present invention and a pharmaceutically acceptable carrier.
• Some embodiments of the present invention include a method of producing a pharmaceutical composition comprising admixing at least one compound according to any of the compound embodiments disclosed herein and a pharmaceutically acceptable carrier.
• Formulations may be prepared by any suitable method, typically by uniformly mixing the active compound(s) with liquids or finely divided solid carriers, or both, in the required proportions, and then, if necessary, forming the resulting mixture into a desired shape.
• Conventional excipients, such as binding agents, fillers, acceptable wetting agents, tabletting lubricants, and disintegrants may be used in tablets and capsules for oral administration. Liquid preparations for oral administration may be in the form of solutions, emulsions, aqueous or oily suspensions, and syrups. Alternatively, the oral preparations may be in the form of dry powder that can be reconstituted with water or another suitable liquid vehicle before use. Additional additives such as suspending or emulsifying agents, non-aqueous vehicles (including edible oils), preservatives, and flavorings and colorants may be added to the liquid preparations. Parenteral dosage forms may be prepared by dissolving the compound of the invention in a suitable liquid vehicle and filter sterilizing the solution before filling and sealing an appropriate vial or ampoule. These are just a few examples of the many appropriate methods well known in the art for preparing dosage forms.
• A compound of the present invention can be formulated into pharmaceutical compositions using techniques well known to those in the art. Suitable pharmaceutically-acceptable carriers, outside those mentioned herein, are known in the art; for example, see Remington, The Science and Practice of Pharmacy, 20th Edition, 2000, Lippincott Williams & Wilkins, (Editors: Gennaro, A. R., et al.).
• While it is possible that, for use in the prophylaxis or treatment, a compound of the invention may, in an alternative use, be administered as a raw or pure chemical, it is preferable however to present the compound or active ingredient as a pharmaceutical formulation or composition further comprising a pharmaceutically acceptable carrier.
• The invention thus further provides pharmaceutical formulations comprising a compound of the invention or a pharmaceutically acceptable salt or derivative thereof together with one or more pharmaceutically acceptable carriers thereof and/or prophylactic ingredients. The carrier(s) must be “acceptable” in the sense of being compatible with the other ingredients of the formulation and not overly deleterious to the recipient thereof.
• Pharmaceutical formulations include those suitable for oral, rectal, nasal, topical (including buccal and sub-lingual), vaginal or parenteral (including intramuscular, sub-cutaneous and intravenous) administration or in a form suitable for administration by inhalation, insulation or by a transdermal patch. Transdermal patches dispense a drug at a controlled rate by presenting the drug for absorption in an efficient manner with a minimum of degradation of the drug. Typically, transdermal patches comprise an impermeable backing layer, a single pressure sensitive adhesive and a removable protective layer with a release liner. One of ordinary skill in the art will understand and appreciate the techniques appropriate for manufacturing a desired efficacious transdermal patch based upon the needs of the artisan.
• The compounds of the invention, together with a conventional adjuvant, carrier, or diluent, may thus be placed into the form of pharmaceutical formulations and unit dosages thereof, and in such form may be employed as solids, such as tablets or filled capsules, or liquids such as solutions, suspensions, emulsions, elixirs, gels or capsules filled with the same, all for oral use, in the form of suppositories for rectal administration; or in the form of sterile injectable solutions for parenteral (including subcutaneous) use. Such pharmaceutical compositions and unit dosage forms thereof may comprise conventional ingredients in conventional proportions, with or without additional active compounds or principles, and such unit dosage forms may contain any suitable effective amount of the active ingredient commensurate with the intended daily dosage range to be employed.
• For oral administration, the pharmaceutical composition may be in the form of, for example, a tablet, capsule, suspension or liquid. The pharmaceutical composition is preferably made in the form of a dosage unit containing a particular amount of the active ingredient. Examples of such dosage units are capsules, tablets, powders, granules or a suspension, with conventional additives such as lactose, mannitol, corn starch or potato starch; with binders such as crystalline cellulose, cellulose derivatives, acacia, corn starch or gelatins; with disintegrators such as corn starch, potato starch or sodium carboxymethyl-cellulose; and with lubricants such as talc or magnesium stearate. The active ingredient may also be administered by injection as a composition wherein, for example, saline, dextrose or water may be used as a suitable pharmaceutically acceptable carrier.
• Compounds of the present invention or a solvate or physiologically functional derivative thereof can be used as active ingredients in pharmaceutical compositions, specifically as 5-HT_2Areceptor modulators. By the term “active ingredient” is defined in the context of a “pharmaceutical composition” and shall mean a component of a pharmaceutical composition that provides the primary pharmacological effect, as opposed to an “inactive ingredient” which would generally be recognized as providing no pharmaceutical benefit.
• The dose when using the compounds of the present invention can vary within wide limits, and as is customary and is known to the physician, it is to be tailored to the individual conditions in each individual case. It depends, for example, on the nature and severity of the illness to be treated, on the condition of the patient, on the compound employed or on whether an acute or chronic disease state is treated or prophylaxis is conducted or on whether further active compounds are administered in addition to the compounds of the present invention. Representative doses of the present invention include, but not limited to, about 0.001 mg to about 5000 mg, about 0.001 mg to about 2500 mg, about 0.001 mg to about 1000 mg, 0.001 mg to about 500 mg, 0.001 mg to about 250 mg, about 0.001 mg to 100 mg, about 0.001 mg to about 50 mg, and about 0.001 mg to about 25 mg. Multiple doses may be administered during the day, especially when relatively large amounts are deemed to be needed, for example 2, 3 or 4, doses. Depending on the individual and as deemed appropriate from the patient's physician or care-giver it may be necessary to deviate upward or downward from the doses described herein.
• The amount of active ingredient, or an active salt or derivative thereof, required for use in treatment will vary not only with the particular salt selected but also with the route of administration, the nature of the condition being treated and the age and condition of the patient and will ultimately be at the discretion of the attendant physician or clinician. In general, one skilled in the art understands how to extrapolate in vivo data obtained in a model system, typically an animal model, to another, such as a human. In some circumstances, these extrapolations may merely be based on the weight of the animal model in comparison to another, such as a mammal, preferably a human, however, more often, these extrapolations are not simply based on weights, but rather incorporate a variety of factors. Representative factors include the type, age, weight, sex, diet and medical condition of the patient, the severity of the disease, the route of administration, pharmacological considerations such as the activity, efficacy, pharmacokinetic and toxicology profiles of the particular compound employed, whether a drug delivery system is utilized, on whether an acute or chronic disease state is being treated or prophylaxis is conducted or on whether further active compounds are administered in addition to the compounds of the present invention and as part of a drug combination. The dosage regimen for treating a disease condition with the compounds and/or compositions of this invention is selected in accordance with a variety factors as cited above. Thus, the actual dosage regimen employed may vary widely and therefore may deviate from a preferred dosage regimen and one skilled in the art will recognize that dosage and dosage regimen outside these typical ranges can be tested and, where appropriate, may be used in the methods of this invention.
• The desired dose may conveniently be presented in a single dose or as divided doses administered at appropriate intervals, for example, as two, three, four or more sub-doses per day. The sub-dose itself may be further divided, e.g., into a number of discrete loosely spaced administrations. The daily dose can be divided, especially when relatively large amounts are administered as deemed appropriate, into several, for example 2, 3 or 4, part administrations. If appropriate, depending on individual behavior, it may be necessary to deviate upward or downward from the daily dose indicated.
• The compounds of the present invention can be administrated in a wide variety of oral and parenteral dosage forms. It will be obvious to those skilled in the art that the following dosage forms may comprise, as the active component, either a compound of the invention or a pharmaceutically acceptable salt of a compound of the invention.
• For preparing pharmaceutical compositions from the compounds of the present invention, the selection of a suitable pharmaceutically acceptable carrier can be either solid, liquid or a mixture of both. Solid form preparations include powders, tablets, pills, capsules, cachets, suppositories, and dispersible granules. A solid carrier can be one or more substances which may also act as diluents, flavouring agents, solubilizers, lubricants, suspending agents, binders, preservatives, tablet disintegrating agents, or an encapsulating material.
• In powders, the carrier is a finely divided solid which is in a mixture with the finely divided active component.
• In tablets, the active component is mixed with the carrier having the necessary binding capacity in suitable proportions and compacted to the desire shape and size.
• The powders and tablets may contain varying percentage amounts of the active compound. A representative amount in a powder or tablet may contain from 0.5 to about 90 percent of the active compound; however, an artisan would know when amounts outside of this range are necessary. Suitable carriers for powders and tablets are magnesium carbonate, magnesium stearate, talc, sugar, lactose, pectin, dextrin, starch, gelatin, tragacanth, methylcellulose, sodium carboxymethylcellulose, a low melting wax, cocoa butter, and the like. The term “preparation” is intended to include the formulation of the active compound with encapsulating material as carrier providing a capsule in which the active component, with or without carriers, is surrounded by a carrier, which is thus in association with it. Similarly, cachets and lozenges are included. Tablets, powders, capsules, pills, cachets, and lozenges can be used as solid forms suitable for oral administration.
• For preparing suppositories, a low melting wax, such as an admixture of fatty acid glycerides or cocoa butter, is first melted and the active component is dispersed homogeneously therein, as by stirring. The molten homogenous mixture is then poured into convenient sized molds, allowed to cool, and thereby to solidify.
• Formulations suitable for vaginal administration may be presented as pessaries, tampons, creams, gels, pastes, foams or sprays containing in addition to the active ingredient such carriers as are known in the art to be appropriate.
• Liquid form preparations include solutions, suspensions, and emulsions, for example, water or water-propylene glycol solutions. For example, parenteral injection liquid preparations can be formulated as solutions in aqueous polyethylene glycol solution. Injectable preparations, for example, sterile injectable aqueous or oleaginous suspensions may be formulated according to the known art using suitable dispersing or wetting agents and suspending agents. The sterile injectable preparation may also be a sterile injectable solution or suspension in a nontoxic parenterally acceptable diluent or solvent, for example, as a solution in 1,3-butanediol. Among the acceptable vehicles and solvents that may be employed are water, Ringer's solution, and isotonic sodium chloride solution. In addition, sterile, fixed oils are conventionally employed as a solvent or suspending medium. For this purpose any bland fixed oil may be employed including synthetic mono- or diglycerides. In addition, fatty acids such as oleic acid find use in the preparation of injectables.
• The compounds according to the present invention may thus be formulated for parenteral administration (e.g. by injection, for example bolus injection or continuous infusion) and may be presented in unit dose form in ampoules, pre-filled syringes, small volume infusion or in multi-dose containers with an added preservative. The pharmaceutical compositions may take such forms as suspensions, solutions, or emulsions in oily or aqueous vehicles, and may contain formulatory agents such as suspending, stabilizing and/or dispersing agents. Alternatively, the active ingredient may be in powder form, obtained by aseptic isolation of sterile solid or by lyophilization from solution, for constitution with a suitable vehicle, e.g. sterile, pyrogen-free water, before use.
• Aqueous formulations suitable for oral use can be prepared by dissolving or suspending the active component in water and adding suitable colorants, flavours, stabilizing and thickening agents, as desired.
• Aqueous suspensions suitable for oral use can be made by dispersing the finely divided active component in water with viscous material, such as natural or synthetic gums, resins, methylcellulose, sodium carboxymethylcellulose, or other well known suspending agents.
• Also included are solid form preparations which are intended to be converted, shortly before use, to liquid form preparations for oral administration. Such liquid forms include solutions, suspensions, and emulsions. These preparations may contain, in addition to the active component, colorants, flavors, stabilizers, buffers, artificial and natural sweeteners, dispersants, thickeners, solubilizing agents, and the like.
• For topical administration to the epidermis the compounds according to the invention may be formulated as ointments, creams or lotions, or as a transdermal patch.
• Ointments and creams may, for example, be formulated with an aqueous or oily base with the addition of suitable thickening and/or gelling agents. Lotions may be formulated with an aqueous or oily base and will in general also contain one or more emulsifying agents, stabilizing agents, dispersing agents, suspending agents, thickening agents, or coloring agents.
• Formulations suitable for topical administration in the mouth include lozenges comprising active agent in a flavored base, usually sucrose and acacia or tragacanth; pastilles comprising the active ingredient in an inert base such as gelatin and glycerin or sucrose and acacia; and mouthwashes comprising the active ingredient in a suitable liquid carrier.
• Solutions or suspensions are applied directly to the nasal cavity by conventional means, for example with a dropper, pipette or spray. The formulations may be provided in single or multi-dose form. In the latter case of a dropper or pipette, this may be achieved by the patient administering an appropriate, predetermined volume of the solution or suspension. In the case of a spray, this may be achieved for example by means of a metering atomizing spray pump.
• Administration to the respiratory tract may also be achieved by means of an aerosol formulation in which the active ingredient is provided in a pressurized pack with a suitable propellant. If the compounds of the present invention or pharmaceutical compositions comprising them are administered as aerosols, for example as nasal aerosols or by inhalation, this can be carried out, for example, using a spray, a nebulizer, a pump nebulizer, an inhalation apparatus, a metered inhaler or a dry powder inhaler. Pharmaceutical forms for administration of the compounds of the present invention as an aerosol can be prepared by processes well-known to the person skilled in the art. For their preparation, for example, solutions or dispersions of the compounds of the present invention in water, water/alcohol mixtures or suitable saline solutions can be employed using customary additives, for example benzyl alcohol or other suitable preservatives, absorption enhancers for increasing the bioavailability, solubilizers, dispersants and others, and, if appropriate, customary propellants, for example include carbon dioxide, CFC's, such as, dichlorodifluoromethane, trichlorofluoromethane, or dichlorotetrafluoroethane; and the like. The aerosol may conveniently also contain a surfactant such as lecithin. The dose of drug may be controlled by provision of a metered valve.
• In formulations intended for administration to the respiratory tract, including intranasal formulations, the compound will generally have a small particle size for example of the order of 10 microns or less. Such a particle size may be obtained by means known in the art, for example by micronization. When desired, formulations adapted to give sustained release of the active ingredient may be employed.
• Alternatively the active ingredients may be provided in the form of a dry powder, for example, a powder mix of the compound in a suitable powder base such as lactose, starch, starch derivatives such as hydroxypropylmethyl cellulose and polyvinylpyrrolidone (PVP). Conveniently the powder carrier will form a gel in the nasal cavity. The powder composition may be presented in unit dose form for example in capsules or cartridges of, e.g., gelatin, or blister packs from which the powder may be administered by means of an inhaler.
• The pharmaceutical preparations are preferably in unit dosage forms. In such form, the preparation is subdivided into unit doses containing appropriate quantities of the active component. The unit dosage form can be a packaged preparation, the package containing discrete quantities of preparation, such as packeted tablets, capsules, and powders in vials or ampoules. Also, the unit dosage form can be a capsule, tablet, cachet, or lozenge itself, or it can be the appropriate number of any of these in packaged form.
• Tablets or capsules for oral administration and liquids for intravenous administration are preferred compositions.
• The compounds according to the invention may optionally exist as pharmaceutically acceptable salts including pharmaceutically acceptable acid addition salts prepared from pharmaceutically acceptable non-toxic acids including inorganic and organic acids. Representative acids include, but are not limited to, acetic, benzenesulfonic, benzoic, camphorsulfonic, citric, ethenesulfonic, dichloroacetic, formic, fumaric, gluconic, glutamic, hippuric, hydrobromic, hydrochloric, isethionic, lactic, maleic, malic, mandelic, methanesulfonic, mucic, nitric, oxalic, pamoic, pantothenic, phosphoric, succinic, sulfuric, tartaric, oxalic, p-toluenesulfonic and the like, such as those pharmaceutically acceptable salts listed in Journal of Pharmaceutical Science, 66, 2 (1977); incorporated herein by reference in its entirety.
• The acid addition salts may be obtained as the direct products of compound synthesis. In the alternative, the free base may be dissolved in a suitable solvent containing the appropriate acid, and the salt isolated by evaporating the solvent or otherwise separating the salt and solvent. The compounds of this invention may form solvates with standard low molecular weight solvents using methods known to the skilled artisan.
• Compounds of the present invention can be converted to “pro-drugs.” The term “pro-drugs” refers to compounds that have been modified with specific chemical groups known in the art and when administered into an individual these groups undergo biotransformation to give the parent compound. Pro-drugs can thus be viewed as compounds of the invention containing one or more specialized non- toxic protective groups used in a transient manner to alter or to eliminate a property of the compound. In one general aspect, the “pro-drug” approach is utilized to facilitate oral absorption. A thorough discussion is provided in T. Higuchi and V. Stella, “Pro-drugs as Novel Delivery Systems,” Vol. 14 of the A.C.S. Symposium Series; and in Bioreversible Carriers in Drug Design, ed. Edward B. Roche, American Pharmaceutical Association and Pergamon Press, 1987, both of which are hereby incorporated by reference in their entirety.
• Some embodiments of the present invention include a method of producing a pharmaceutical composition for “combination-therapy” comprising admixing at least one compound according to any of the compound embodiments disclosed herein, together with at least one known pharmaceutical agent as described herein and a pharmaceutically acceptable carrier.
• It is noted that when the 5-HT_2Areceptor modulators are utilized as active ingredients in a pharmaceutical composition, these are not intended for use only in humans, but in other non-human mammals as well. Indeed, recent advances in the area of animal health-care mandate that consideration be given for the use of active agents, such as 5-HT2A receptor modulators, for the treatment of a 5-HT_2Amediated disease or disorder in domestic animals (e.g., cats and dogs) and in other domestic animals (e.g., such as cows, chickens, fish, etc.). Those of ordinary skill in the art are readily credited with understanding the utility of such compounds in such settings.
• Other Utilities
• Another object of the present invention relates to radio-labeled compounds of the present invention that would be useful not only in radio-imaging but also in assays, both in vitro and in vivo, for localizing and quantitating the 5-HT_2Areceptor in tissue samples, including human, and for identifying 5-HT_2Areceptor ligands by inhibition binding of a radio-labeled compound. It is a further object of this invention to develop novel 5-HT_2Areceptor assays of which comprise such radio-labeled compounds.
• The present invention embraces isotopically-labeled compounds of the present invention. An “isotopically” or “radio-labeled” compounds are those which are identical to compounds disclosed herein, but for the fact that one or more atoms are replaced or substituted by an atom having an atomic mass or mass number different from the atomic mass or mass number typically found in nature (i.e., naturally occurring). Suitable radionuclides that may be incorporated in compounds of the present invention include but are not limited to²H (also written as D for deuterium),³H (also written as T for tritium),¹¹C,¹³C,¹⁴C,¹³N,¹⁵N,¹⁵O,¹⁷O,¹⁸O,¹⁸F,³⁵S,³⁶Cl,⁸²Br,⁷⁵Br,⁷⁶B,⁷⁷Br,¹²³I,¹²⁴I,¹²⁵and¹³¹I. The radionuclide that is incorporated in the instant radio-labeled compounds will depend on the specific application of that radio-labeled compound. For example, for in vitro 5-HT_2Areceptor labeling and competition assays, compounds that incorporate³H,¹⁴C,⁸²Br,¹²⁵I ,¹³¹I,³⁵S or will generally be most useful. For radio-imaging applications¹⁸C,¹⁸F,¹²⁵I,¹²³I,¹²⁴I,¹³¹I,⁷⁵Br,⁷⁶Br or⁷⁷Br will generally be most useful.
• It is understood that a “radio-labeled” or “labeled compound” is a compound of Formula (I) that has incorporated at least one radionuclide; in some embodiments the radionuclide is selected from the group consisting of³H,¹⁴C,¹²⁵I ,³⁵S and⁸²Br. Certain isotopically-labeled compounds of the present invention are useful in compound and/or substrate tissue distribution assays. In some embodiments the radionuclide³H and/or¹⁴C isotopes are useful in these studies. Further, substitution with heavier isotopes such as deuterium (i.e.,²H) may afford certain therapeutic advantages resulting from greater metabolic stability (e.g., increased in vivo half-life or reduced dosage requirements) and hence may be preferred in some circumstances. Isotopically labeled compounds of the present invention can generally be prepared by following procedures analogous to those disclosed in the Schemes supra and Examples infra, by substituting an isotopically labeled reagent for a non-isotopically labeled reagent. Other synthetic methods that are useful are discussed infra. Moreover, it should be understood that all of the atoms represented in the compounds of the invention can be either the most commonly occurring isotope of such atoms or the more scarce radio-isotope or nonradio-active isotope.
• Synthetic methods for incorporating radio-isotopes into organic compounds are applicable to compounds of the invention and are well known in the art. These synthetic methods, for example, incorporating activity levels of tritium into target molecules, are as follows:
• A. Catalytic Reduction with Tritium Gas - This procedure normally yields high specific activity products and requires halogenated or unsaturated precursors.
• B. Reduction with Sodium Borohydride [³H]—This procedure is rather inexpensive and requires precursors containing reducible functional groups such as aldehydes, ketones, lactones, esters, and the like.
• C. Reduction with Lithium Aluminum Hydride [³H ]—This procedure offers products at almost theoretical specific activities. It also requires precursors containing reducible functional groups such as aldehydes, ketones, lactones, esters, and the like.
• D. Tritium Gas Exposure Labeling—This procedure involves exposing precursors containing exchangeable protons to tritium gas in the presence of a suitable catalyst.
• E. N-Methylation using Methyl Iodide [³H]—This procedure is usually employed to prepare O-methyl or N-methyl (³H) products by treating appropriate precursors with high specific activity methyl iodide (³H). This method in general allows for higher specific activity, such as for example, about 70-90 Ci/mmol.
• Synthetic methods for incorporating activity levels of¹²⁵I into target molecules include:
• A. Sandmeyer and like reactions—This procedure transforms an aryl or heteroaryl amine into a diazonium salt, such as a tetrafluoroborate salt, and subsequently to¹²⁵I labeled compound using Na¹²⁵I. A represented procedure was reported by Zhu, D.-G. and co-workers in J. Org. Chem. 2002, 67, 943-948.
• B. Ortho¹²⁵Iodination of phenols—This procedure allows for the incorporation of¹²⁵I at the ortho position of a phenol as reported by Collier, T. L. and co-workers in J. Labeled Compd Radiopharm. 1999, 42, S264-S266.
• C. Aryl and heteroaryl bromide exchange with¹²⁵I—This method is generally a two step process. The first step is the conversion of the aryl or heteroaryl bromide to the corresponding tri-alkyltin intermediate using for example, a Pd catalyzed reaction [i.e. Pd(Ph₃P)4] or through an aryl or heteroaryl lithium, in the presence of a tri-alkyltinhalide or hexaalkylditin [e.g., (CH₃)₃SnSn(CH₃)₃]. A represented procedure was reported by Bas, M.-D. and co-workers in J. Labeled Compd Radiopharm. 2001, 44, S280-S282.
• A radio-labeled 5-HT_2Areceptor compound of Formula (I) can be used in a screening assay to identify/evaluate compounds. In general terms, a newly synthesized or identified compound (i.e., test compound) can be evaluated for its ability to reduce binding of the “radio-labeled compound of Formula (I)” to the 5-HT_2Areceptor. Accordingly, the ability of a test compound to compete with the “radio-labeled compound of Formula (I)” for the binding to the 5-HT_2Areceptor directly correlates to its binding affinity.
• The labeled compounds of the present invention bind to the 5-HT_2Areceptor. In one embodiment the labeled compound has an IC₅₀less than about 500 μM, in another embodiment the labeled compound has an IC₅₀less than about 100 μM, in yet another embodiment the labeled compound has an IC₅₀less than about 10 μM, in yet another embodiment the labeled compound has an IC₅₀less than about 1 μM, and in still yet another embodiment the labeled inhibitor has an IC₅₀less than about0.1 μM.
• Other uses of the disclosed receptors and methods will become apparent to those in the art based upon, inter alia, a review of this disclosure.
• As will be recognized, the steps of the methods of the present invention need not be performed any particular number of times or in any particular sequence. Additional objects, advantages, and novel features of this invention will become apparent to those skilled in the art upon examination of the following examples thereof, which are intended to be illustrative and not intended to be limiting.
EXAMPLESExample 1Syntheses of Compounds of the Present Invention
• Illustrated syntheses for compounds of the present invention are shown inFIGS. 17 through 21 andFIGS. 29 through 34 where the symbols have the same definitions as used throughout this disclosure.
• The compounds of the invention and their synthesis are further illustrated by the following examples. The following examples are provided to further define the invention without, however, limiting the invention to the particulars of these examples. The compounds described herein, supra and infra, are named according to the CS Chem Draw Ultra Version 7.0.1, AutoNom version 2.2. In certain instances common names are used and it is understood that these common names would be recognized by those skilled in the art.
• Chemistry: Proton nuclear magnetic resonance (¹H NMR) spectra were recorded on a Varian Mercury Vx-400 equipped with a 4 nucleus auto switchable probe and z-gradient or a Bruker Avance-400 equipped with a QNP (Quad Nucleus Probe) or a BBI (Broad Band Inverse) and z-gradient. Chemical shifts are given in parts per million (ppm) with the residual solvent signal used as reference. NMR abbreviations are used as follows: s=singlet, d=doublet, t=triplet, q=quartet, m=multiplet, br=broad. Microwave irradiations were carried out using the Emyrs Synthesizer (Personal Chemistry). Thin-layer chromatography (TLC) was performed on silica gel 60 F₂₅₄(Merck), preparatory thin-layer chromatography (prep TLC) was preformed on PK6F silica gel 60 A 1 mm plates (Whatman), and column chromatography was carried out on a silica gelcolumn using Kieselgel 60, 0.063-0.200 mm (Merck). Evaporation was done in vacuo on a Buchi rotary evaporator. Celite 545® was used during palladium filtrations.
• LCMS specs: 1) PC: HPLC-pumps: LC-10AD VP, Shimadzu Inc.; HPLC system controller: SCL-10A VP, Shimadzu Inc; UV-Detector: SPD-10A VP, Shimadzu Inc; Autosampler: CTC HTS, PAL, Leap Scientific; Mass spectrometer: API 150EX with Turbo Ion Spray source, AB/MDS Sciex; Software: Analyst 1.2. 2) Mac: HPLC-pumps: LC-8A VP, Shimadzu Inc; HPLC system controller: SCL-10A VP, Shimadzu Inc. UV-Detector: SPD-10A VP, Shimadzu Inc; Autosampler: 215 Liquid Handler, Gilson Inc; Mass spectrometer: API 150EX with Turbo Ion Spray source, AB/MDS Sciex Software: Masschrom 1.5.2.
Example 1.1Preparation of intermediate 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine
• To a stirred solution of 4-bromo-5-(2-methoxy-5-nitro-phenyl)-1 -methyl-1H-pyrazole (1.799 g, 5.76 mmol) in EtOH (20 mL) was added SnCl₂H₂O (5.306 g, 23.05 mmol, 4.0 eq.), the mixture was stirred at reflux for 2 hrs and ETOH was removed under vacuum. The resulting solid was dissolved in EtOAc, 1N NaOH (30 mL) was added, and the mixture was stirred overnight. The white precipitate was filtered off through celite, and the aqueous phase was extracted with EtOAc (3×80 mL). The combined organic phase was dried over anhydrous MgSO₄, filtered and evaporated. The crude reaction mixture was purified by SiO2 column chromatography (Eluent: EtOAc/Hexane=1/3 then 1/1) to give 3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (1.430 g, 5.07 mmol, 88%) as a white solid: LCMS m/z (%)=282 (M+H⁷⁹Br, 98), 284 (M+H⁸¹Br, 100).¹H NMR (400 MHz, CDCl₃) δ: 7.52 (s, 1H), 6.86 (d, J=8.8 Hz, 1H), 6.80 (dd, J=2.8, 8.8 Hz, 1H), 6.22 (d, J=2.4 Hz, 1H), 4.25 ( broad s, 2H), 3.72 (s, 3H), 3.71 (s, 3H).
• The intermediate 4-bromo-5-(2-methoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole was prepared in the following manner:
• A. 2-Methyl-2H-pyrazole-3-boronic acid: N-methyl pyrazole (25 mL, 0.3 mol) was dissolved in 500 mL of THF. The solution was then cooled to −78° C. in a dry ice/isopropanol bath. Once the solution reached −78° C., n-BuLi (140 mL, 0.40 mol) was added dropwise by canula. The reaction mixture was stirred at −78° C. for 1.5 hours. Then, triisopropyl borate (280 mL, 1.2 mol) was added to the above mixture via canula. While stirring overnight, the reaction temperature was gradually increased from −78° C. to 0° C. The pH of the mixture was adjusted to 6 with 1N HCl. THF was removed under reduced pressure, and the aqueous residue was extracted with EtOAc (2×100 mL). The solid was then filtered to yield 108 g (100%) of 2-methyl-2H-pyrazole-3-boronic acid as a yellow solid. (Final product contains about 60% inorganic salt).
• B. Trifluoro-methanesulfonic acid 2-methoxy-5-nitro-phenyl ester: To a stirred solution of 2-methoxy-5-nitrophenol (5.092 g, 30 mmol) in a mixture of CH₂Cl₂(3 mL) and pyridine (20 mL) was added triflic anhydride (16.478 g, 9.8 mL, 2.0 eq.) dropwise at 0° C. The mixture was warmed to room temperature and stirred for 2 hrs. Most of the pyridine was removed under vacuum. The residue was diluted with EtOAc, washed with 1N HCl and water, the aqueous phase was then extracted with EtOAc (3×100 mL). The combined organic phase was washed with brine, dried over anhydrous MgSO₄, filtered and evaporated. The crude reaction mixture was purified by SiO₂column chromatography (Eluent: EtOAc/Hexane=1/3 then 1/2) to give the triflated compound trifluoro-methanesulfonic acid 2-methoxy-5-nitro-phenyl ester (8.943 g, 30 mmol, 100%) as a yellow solid: LCMS m/z (%)=302 (M+H, 100).¹H NMR (400 MHz, CDCl₃) δ: 8.30 (dd, J=4.0, 8.0 Hz, 1H), 8.16 (d, J=4.0 Hz, 1H), 7.15 ( d, J=8.0 Hz, 1H), 4.06 (s, 3H).
• C. 5-(2-Methoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole: Trifluoro-methanesulfonic acid 2-methoxy-5-nitro-phenyl ester from Step B. (2.561 g, 8.50 mmol), 2-methyl-2H-pyrazole-3-boronic acid from Step A. (4.283 g, 34.01 mmol, 4.0 eq.) and Na₂CO₃(10.816 g, 102.04 mmol, 12.0 eq.) were dissolved in a mixture of THF (200 mL) and H₂O (100 mL). The resulting mixture was degassed with N₂for 5 mins, followed by the addition of Pd(PPh₃)₄(0.486 g, 0.42 mmol, 0.05 eq.). After degassing for another 5 mins it was stirred under Ar at 70° C. overnight. Once the reaction was complete, THF was removed under reduced pressure and the aqueous phase was extracted with EtOAc (4×100 mL). The combined organic phase was dried over anhydrous MgSO₄, filtered and evaporated. The crude reaction mixture was purified by SiO₂column chromatography ( Eluent: EtOAc/Hexane=1/1) to afford compound 5-(2-methoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole (1.799 g, 7.71 mmol, 91%) as a white solid: LCMS m/z (%)=234 (M+H, 100).¹H NMR (400 MHz, CDCl₃) δ: 8.34 (dd, J=2.8,9.2 Hz, 1H), 8.19 (d, J=2.8 Hz, 1H), 7.56 ( d, J=2.0 Hz, 1H), 7.08 (d, J=9.2 Hz, 1H), 6.31 (d, J=1.6 Hz, 1H), 3.96 (s, 3H), 3.74 (s, 3H).
• D. 4-Bromo-5-(2-methoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole: To a stirred solution of 5-(2-methoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole (1.787 g, 7.66 mmol) in DMF (20 mL) was added NBS (1.515 g, 8.43 mmol, 1.1 eq.) in DMF (5 mL) dropwise at 0° C. After stirring at 0° C. for 3 hrs, TLC showed completion of the reaction. The mixture was diluted with EtOAc (300 mL), washed with water (3×10 mL) and brine. The EtOAc phase was dried over anhydrous MgSO₄, filtered and evaporated. The crude reaction mixture was purified by SiO₂column chromatography (Eluent: EtOAc/Hexane=1/3 then 1/1) to give the product 4-bromo-5-(2-methoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole (2.214 g, 7.09 mmol, 93%) as light yellow solid: LCMS m/z (%)=312 (M+H⁷⁹Br, 100), 314 (M+H⁸¹Br, 100).¹H NMR (400 MHz, CDCl₃δ: 8.40 (dd, J=2.4, 6.9 Hz, 1H), 8.22 (m, 1H), 7.57 (s, 1H), 7.14 (d, J=9.2 Hz, 1H), 3.98 (s, 3H), 3.74 (s, 3H).
Example 1.2Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-chloro-2-trifluoromethyl-phenyl)-urea (Compound 9)
• Urea synthesis (General Procedure): To a stirred solution of 3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.034 g, 0.12 mol, Example 1.1) in CH₂Cl₂(1 mL) was added 4-chloro-2-(trifluoromethyl)phenyl isocyanate (0.029 g, 20.0 μL, 0.13 mmol, 1.05 equiv.) at room temperature. White solid precipitated and was filtered and washed with cold CH₂Cl₂to afford Compound 9 (0.037 g, 0.074 mmol, 60%) as a white solid. LCMS m/z (%)=503 (M+H⁷⁹Br, 77), 439 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.82 (s, 1H), 8.22 (d, J=9.6 Hz, 1H), 7.62-7.72 (m, 4H), 7.49 (s, 1H), 7.43 (d, J=2.6 Hz, 1H), 7.15 (d, J=9.0 Hz, 1H), 3.83 (s, 3H), 3.68 (s, 3H).
Example 1.3Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-fluoro-phenyl)-urea (Compound 2)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (2.965 g, 10.5 mmol) was treated with 4-fluorophenyl isocyanate (1.601 g, 1.31 mL, 11.6 mmol, 1.1 equiv.) in CH₂Cl₂(20 mL), in a similar manner as described in Example 1.2 to afford Compound 2 (3.755 g, 8.94 mmol, 85%) as a white solid. LCMS m/z (%)=419 (M+H⁷⁹Br, 99), 421 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.49 (broad s, 2H), 7.77 (d, J=9.0 Hz, 1H), 7.50-7.58 (m, 2H), 7.50 (s, 1H), 7.43 (s, 1H), 7.12 (d, J=8.9 Hz, 1H), 6.98-7.06 (m, 2H), 3.81 (s, 3H), 3.68 (s, 3H).
Example 1.4Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2,4-dichloro-phenyl)-urea (Compound 3)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.031 g, 0.11 mmol) was treated with 2,4-dichlorophenyl isocyanate (0.021 g, 0.11 mmol, 1.0 equiv.) in CH₂Cl₂(2 mL), in a similar manner as described in Example 1.2 to afford Compound 3 (0.036 g, 0.076 mmol, 69%) as a white solid. LCMS m/z (%)=469 (M+H⁷⁹Br³⁵Cl³⁵Cl, 60), 471 (M+H⁷⁹Br³⁵Cl³⁷Cl&⁸¹Br³⁵Cl³⁵Cl, 100), 473 (M+H⁸¹Br³⁵Cl³⁷Cl⁷⁹Br³⁷Cl³⁷Cl, 54), 475 (M+H⁸¹Br³⁷Cl³⁷Cl, 4).¹H NMR (400 MHz, acetone-d₆) δ: 8.81 (s, 1H), 8.36 (d, J=9.0 Hz, 1H), 7.91 (s, 1H), 7.69 (dd, J=2.7, 9.0 Hz, 1H), 7.50 (s, 1H), 7.48 (d, J=2.4 Hz, 1H), 7.45 (d, J=2.7 Hz, 1H), 7.34 (dd, J=2.4, 9.0 Hz, 1H), 7.15 (d, J=9.0 Hz, 1H), 3.83 (s, 3H), 3.69 (s, 3H).
Example 1.5Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-methoxy-phenyl)-urea (Compound 4)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.031 g, 0.11 mmol) was treated with 4-methoxyphenyl isocyanate (0.016 g, 14.2 μL, 0.11 mmol, 1.0 equiv.) in CH₂Cl₂(2 mL), in a similar manner as described in Example 1.2 to afford Compound 4 (0.037 g, 0.086 mmol, 78%) as a white solid. LCMS m/z (%)=431 (M+H⁷⁹Br, 89), 433 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.02 (s, 1H), 7.89 (s, 1H), 7.67 (dd, J=2.7, 9.0 Hz, 1H), 7.49 (s, 1H), 7.43 (s, 1H), 7.42 (d, J=9.0 Hz, 2H), 7.12 (d, J=9.0 Hz, 1H), 6.85 (d, J=9.0 Hz, 2H), 3.81 (s, 3H), 3.75 (s, 3H), 3.68 (s, 3H).
Example 1.6Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-bromo-phenyl)-urea (Compound 5)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.032 g, 0.11 mmol) was treated with 4-bromophenyl isocyanate (0.022 g, 0.11 mmol, 1.0 equiv.) in CH₂Cl₂(2 mL), in a similar manner as described in Example 1.2 to afford Compound 5 (0.040 g, 0.08 mmol, 75%) as a white solid. LCMS m/z (%)=479 (M+H⁷⁹Br⁷⁹Br, 51), 481 (M+H⁷⁹Br⁸¹Br, 100), 483 (M+H⁸¹Br⁸¹Br, 50).¹H NMR (400 MHz, acetone-d₆) δ: 8.22 (s, 1H), 8.14 (s, 1H), 7.68 (dd, J=2.7, 9.0 Hz, 1H), 7.48-7.54 (m, 3H), 7.39-7.46 (m, 3H), 7.14 (d, J=9.0 Hz, 1H), 3.82 (s, 3H), 3.68 (s, 3H).
Example 1.7Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl}4-methoxy-phenyl]-3-(4Chloro-3-trifluoromethyl-phenyl)-urea (Compound 6)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.035 g, 0.12 mmol) was treated with 4-chloro-3-(trifluoromethyl)phenyl isocyanate (0.027 g, 0.12 mmol, 1.0 equiv.) in CH₂Cl₂(2 mL), in a similar manner as described in Example 1.2 to afford Compound 6 (0.051 g, 0.10 mmol, 81%) as a white solid. LCMS m/z (%)=503 (M+H⁷⁹Br³⁵Cl, 78), 505 (M+H⁸¹Br³⁵Cl, 100), 507 (M+H⁸¹Br³⁷Cl, 28).¹H NMR (400 MHz, acetone-d₆) δ: 8.52 (s, 1H), 8.27 (s, 1H), 8.13 (s, 1H), 7.74 (d, J=8.7 Hz, 1H), 7.68 (d, J=9.0 Hz, 1H), 7.53 (d, J=8.7 Hz, 1H), 7.49 (s, 1H), 7.43 (s, 1H), 7.14 (d, J=9.0 Hz, 1H), 3.82 (s, 3H), 3.68 (s, 3H).
Example 1.8Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3,5-difluoro-phenyl)urea (Compound 7)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.032 g, 0.11 mmol) was treated with 3,5-difluorophenyl isocyanate (0.018 g, 14 μL, 0.11 mmol, 1.0 equiv.) in CH₂Cl₂(2 mL), in a similar manner as described in Example 1.2 to afford Compound 7 (0.038 g, 0.09 mmol, 77%) as a white solid. LCMS m/z (%)=437 (M+H⁷⁹Br, 100), 439 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.47 (s, 1H), 8.23 (s, 1H), 7.68 (dd, J=2.7, 9.0 Hz, 1H), 7.50 (s, 1H), 7.42 (d, J=2.7 Hz, 1H), 7.18-7.27 (m, 2H), 7.15 (d, J=9.0 Hz, 1H), 6.59 (ttt, J=2.3, 9.1, 9.1 Hz, 1H), 3.82 (s, 3H), 3.68 (s, 3H).
Example 1.9Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2,4-difluoro-phenyl)urea (Compound 8)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.027 g, 0.095 mmol) was treated with 2,4-difluorophenyl isocyanate (0.015 g, 11.5 μL, 0.095 mmol, 1.0 equiv.) in CH₂Cl₂(2 mL), in a similar manner as described in Example 1.2 to afford Compound 8 (0.030 g, 0.069 mmol, 71%) as a white solid. LCMS m/z (%)=437 (M+H⁷⁹Br, 100), 439 (M+H⁸¹Br, 91).¹H NMR (400 MHz, acetone-d₆) δ: 8.45 (s, 1H), 8.23 (dt, J=6.1, 9.2 Hz, 1H), 7.93 (s, 1H), 7.68 (dd, J=2.6, 9.0 Hz, 1H), 7.49 (s, 1H), 7.44 (d, J=2.6 Hz, 1H), 7.14 (d, J=9.0 Hz, 1H), 7.07 (ddd, J=2.7, 8.7, 11.3 Hz, 1H), 6.93-7.02 (m, 1H), 3.82 (s, 3H), 3.69 (s, 3H).
Example 1.10Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3Chloro-phenyl)-urea (Compound 20)
• To a stirred solution of 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.015 g, 0.051 mmol) in CH₂Cl₂(1 mL) was added 3-chlorophenyl isocyanate (0.008 g, 7 μL, 0.054 mol, 1.05 equiv.). After the TLC showed the consumption of the starting material, it was isolated by preparative thin layer chromatography (TLC) (Eluent: EtOAc/Hexane=1/1) and Compound 20 (0.020 g, 0.047 mmol, 92%) was obtained as a solid film. LCMS m/z (%)=435 (M+H⁷⁹Br, 68), 437 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.29 (s, 1H), 8.19 (s, 1H), 7.80 (t, J=1.9 Hz, 1H), 7.29 (dd, J=2.7, 9.0 Hz, 1H), 7.49 (s, 1H), 7.43 (d, J=2.7 Hz, 1H), 7.34 (d, J=8.4 Hz, 1H), 7.26 (t, J=8.0 Hz, 1H), 7.14 (d, J=9.0 Hz, 1H), 7.00 (d, J=7.8 Hz, 1H), 3.82 (s, 3H), 3.68 (s, 3H).
Example 1.11Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-cyano-phenyl)-urea (Compound 21)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.037 g, 0.13 mmol) was treated with 3-cyanophenyl isocyanate (0.020 g, 0.14 mol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.10 to afford Compound 21 (0.032 g, 0.08 mmol, 58%) as a white powder. LCMS m/z (%)=426 (M+H⁷⁹Br, 99), 428 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.45 (s, 1H), 8.26 (d, J=9.6 Hz, 1H), 8.05 (t, J=1.7 Hz, 1H), 7.74 (dd, J=1.5, 8.2 Hz, 1H), 7.70 (dd, J=2.7,9.0 Hz, 1H), 7.50 (s, 1H), 7.48 (t, J=8.1 Hz, 1H), 7.43 (d, J=2.7 Hz, 1H), 7.36 (d, J=7.6 Hz, 1H), 7.15 (d, J=9.0 Hz, 1H), 3.83 (s, 3H), 3.69 (s, 3H).
Example 1.12Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3,4-difluoro-phenyl)-urea (Compound 10)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.035 g, 0.12 mmol) was treated with 3,4-difluorophenyl isocyanate (0.021 g, 16.0 μL, 0.13 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 10 (0.021 g, 0.047 mmol, 38%) as a white solid. LCMS m/z (%) 437 (M+H⁷⁹Br, 100), 439 (M+H⁸¹Br, 99).¹H NMR (400 MHz, acetone-d₆) δ: 8.29 (s, 1H), 8.16 (s, 1H), 7.74 (dddd, J=2.5, 7.4, 13.4 Hz, 1H), 7.68 (dd, J=2.7, 9.0 Hz, 1H), 7.49 (s, 1H), 7.42 (d, J=2.7 Hz, 1H), 7.11-7.26 (m, 2H), 7.13 (d, J=9.0 Hz, 1H), 3.82 (s, 3H), 3.69 (s, 3H).
Example 1.13
• Preparation of 1-Biphenyl-2-yl-3-[3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 22)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.036 g, 0.13 mmol) was treated with 2-biphenylyl isocyanate (0.027 g, 24.0 μL, 0.14 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.10 to afford Compound 22 (0.031 g, 0.06 mmol, 51%) as a white powder. LCMS m/z (%)=477 (M+H⁷⁹Br, 100), 479 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.41 (s, 1H), 8.17 (d, J=8.3 Hz, 1H),7.60 (d, J=2.7, 9.0 Hz, 1H), 7.43-7.51 (m, 3H), 7.37-7.43 (m,3H), 7.29-7.37 (m, 2H), 7.24 (s, 1H), 7.20 (dd, J=1.6, 7.6 Hz, 1H), 7.11 (dd, J=1.0, 7.4 Hz, 1H), 7.08 (d, J=9.0 Hz, 1H), 3.80 (s, 3H), 3.66 (s, 3H).
Example 1.14Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-trifluoromethyl-phenyl)-urea (Compound 11)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.035 g, 0.12 mmol) was treated with a,a,a-trifluoro-m-tolyl isocyanate (0.025 g, 18.0 μL, 0.13 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 11 (0.038 g, 0.080 mmol, 65%) as a white solid. LCMS m/z (%)=469 (M+H⁷⁹Br, 91), 471 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.42 (s, 1H), 8.23 (s, 1H), 8.07 (s, 1H), 7.64-7.73 (m, 2H), 7.45-7.53 (m, 2H), 7.44 (s, 1H), 7.30 (d, J=7.6 Hz, 1H), 7.15 (d, J=8.9 Hz, 1H),3.82 (s,3H),3.69 (s, 3H).
Example 1.15Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-trifluoromethyl-phenyl)urea (Compound 12)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.035 g, 0.12 mmol) was treated with α,α,α-trifluoro-p-tolyl isocyanate (0.024 g, 19.0 μL, 0.13 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 12 (0.048 g, 0.102 mmol, 83 %) as a white solid. LCMS m/z (%)=469 (M+H⁷⁹Br, 92), 471 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.51 (s, 1H), 8.27 (s, 1H), 7.76 (d, J=8.3 Hz, 2H), 7.71 (dd, J=2.3, 9.0 Hz, 1H), 7.62 (d, J=8.4 Hz, 2H), 7.52 (s, 1H), 7.46 (d, J=2.3 Hz, 1H), 7.16 (d, J=8.9 Hz, 1H), 3.84 (s, 3H), 3.70 (s, 3H).
Example 1.16Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-Chloro-phenyl)-urea (Compound 1)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.260 g, 0.92 mmol) was treated with 4-chlorophenyl isocyanate (0.144 g, 0.92 mmol, 1.0 equiv.) in CH₂Cl₂(5 mL), in a similar manner as described in Example 1.2 to afford Compound 1 (0.340 g, 0.78 mmol, 84%) as a white solid. LCMS m/z (%)=435 (M+H⁷⁹Br³⁵Cl, 77), 437 (M+H⁸¹Br³⁵Cl, 100), 439 (M+H⁸¹Br³⁷Cl, 25).¹H NMR (400 MHz, CDCl₃) 5: 7.56 (s, 1H), 7.44 (dd, J=2.7, 8.9 Hz, 1H), 7.34 (d, J=9.0 Hz, 1H), 7.29 (d, J=9.0 Hz, 1H), 7.19 (d, J=2.7 Hz, 1H), 6.59 (s, 1H), 6.47 (s, 1H), 3.84 (s, 3H), 3.74 (s, 3H).
Example 1.17Preparation of 1-(3,5-Bis-trifluoromethyl-phenyl)-3-[3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 13)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.037 g, 0.13 mmol) was treated with 3,5-bis(trifluoromethyl)phenyl isocyanate (0.036 g, 24.0 μL, 0.14 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 13 (0.030 g, 0.06 mmol, 43%) as a white solid. LCMS m/z (%)=537 (M+H⁷⁹Br, 99), 539 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.77 (s, 1H), 8.42 (s, 1H), 8.22 (s, 2H), 7.73 (dd, J=2.5, 9.0 Hz, 1H), 7.51 (s, 1H), 7.46 (d, J=2.5 Hz, 1H), 7.18 (d, J=9.0 Hz, 1H), 3.85 (s, 3H), 3.71 (s, 3H).
Example 1.18Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-isopropyl-phenyl)urea (Compound 23)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.035 g, 0.12 mmol) was treated with 4-isopropylphenyl isocyanate (0.022 g, 21.0 μL, 0.13 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.10 to afford Compound 23 (0.028 g, 0.06 mmol, 50%) as a solid film. LCMS m/z (%)=443 (M+H⁷⁹Br, 100), 445 (M+H⁸¹Br, 99).¹H NMR (400 MHz, acetone-d₆) δ: 8.08 (s, 1H), 8.00 (s, 1H), 7.68 (dd, J=2.6, 8.9 Hz, 1H), 7.49(s, 1H), 7.40-7.46 (m, 3H), 7.09-7.17 (m, 3H), 3.81 (s, 3H), 3.68 (s, 3H), 2.78-2.92 (m, 1H), 1.21 (s, 3H), 1.20 (s, 3H).
Example 1.19Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-naphthalen-2-yl-urea (Compound 14)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.035 g, 0.12 mmol) was treated with 2-naphthyl isocyanate (0.023 g, 0.13 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 14 (0.040 g, 0.09 mmol, 70%) as a white solid. LCMS m/z (%)=451 (M+H⁷⁹Br, 95), 453 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.30 (s, 1H), 8.20 (s, 1H), 8.19 (d, J=1.8 Hz, 1H), 7.56-7.84 (m, 3H), 7.72 (dd, J=2.7, 9.0 Hz, 1H), 7.56 (dd, J=2.1, 8.8 Hz, 1H), 7.50 (s, 1H), 7.48 (d, J=2.7 Hz, 1H), 7.44 (t, J=8.0 Hz, 1H), 7.14 (t, J=8.0 Hz, 1H), 3.83 (s, 3H), 3.70 (s, 3H).
Example 1.20Preparation of 1-[3-(4-Bromo-2-methyl-2 H-pyrazol-3-yl)-4-methoxy-phenyl]-3-naphthalen-1-yl-urea (Compound 24)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.036 g, 0.13 mmol) was treated with l-naphthyl isocyanate (0.023 g, 0.14 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.10 to afford Compound 24 (0.039 g, 0.09 mmol, 68%) as a white powder. LCMS m/z (%)=451 (M+H⁷⁹Br, 95), 453 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.58 (s, 1H), 8.32 (s, 1H), 8.16 (d, J=7.0 Hz, 1H), 8.10 (d, J=7.3 Hz, 1H), 7.91 (d, J=9.4 Hz, 1H), 7.75 (dd, J=2.7, 9.0 Hz, 1H), 7.65 (d, J=8.2 Hz, 1H), 7.44-7.57 (m, 5H), 7.14 (d, J=9.0 Hz, 1H), 3.83 (s, 31H), 3.69 (s, 31H).
Example 1.21Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-chloro-phenyl)-thiourea (Compound 71)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.037 g, 0.13 mmol) was treated with 4-chlorophenyl isothiocyanate (0.024 g, 0.14 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.10 to afford Compound 71 (0.048 g, 0.10 mmol, 80%) as a solid film. LCMS m/z (%)=451 (M+H⁷⁹Br³⁵Cl, 85), 453 (M+H⁸¹Br³⁵Cl, 100), 455 (M+H⁸¹Br³⁷Cl, 35).¹H NMR (400 MHz, CDCl₃) δ: 8.00 (s, 1H), 7.85 (s, 1H), 7.53 (s, 1H), 7.48 (dd, J=2.7, 8.8 Hz, 1H), 7.37 (s, 4H), 7.30 (d, J=2.7 Hz, 1H), 7.08 (d, J=8.8 Hz, 1H), 3.87 (s, 3H), 3.75 (s, 3H).
Example 1.22
• 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-nitro-phenyl) urea (Compound 15)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.036 g, 0.13 mmol) was treated with 3-nitrophenyl isocyanate (0.023 g, 0.13 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 15 (0.040 g, 0.09 mmol, 70%) as a yellow solid. LCMS m/z (%)=446 (M+H⁷⁹Br, 100), 448 (M+H⁸¹Br, 89).¹H NMR (400 MHz, acetone-d₆) δ: 8.63 (s, 1H), 8.58 (s, 1H), 8.28 (s, 1H), 7.80-7.86 (m, 2H), 7.72 (dd, J=2.7, 9.0 Hz, 1H), 7.55 (t, J=8.2 Hz, 1H), 7.50 (s, 1H), 7.45 (d, J=2.7 Hz, 1H), 7.16 (d, J=9.0 Hz, 1H), 3.83 (s, 3H), 3.69 (s, 3H).
Example 1.23Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-fluoro-3-nitro-phenyl)urea (Compound 16)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.037 g, 0.13 mmol) was treated with 4-fluoro-3-nitrophenyl isocyanate (0.025 g, 0.14 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 16 (0.042 g, 0.09 mmol, 69%) as a yellow solid. LCMS m/z (%)=464 (M+H⁷⁹Br, 100), 466 (M+H⁸¹Br, 96).¹H NMR (400 MHz, acetone-d₆) δ: 8.55 (s, 1H), 8.44-8.50 (m, 1H), 8.29 (s, 1H), 7.77-7.83 (s, 1H), 7.70 (dd, J=2.7, 9.0 Hz, 1H), 7.49 (s, 1H), 7.37-7.46 (m, 2H), 7.16 (d, J=8.9 Hz, 1H), 3.83 (s, 3H), 3.69 (s, 3H).
Example 1.24Preparation of 1-(3-Acetyl-phenyl)-3-[3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 17)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.031 g, 0.11 mmol) was treated with 3-acetylphenyl isocyanate (0.019 g, 15.8 μL, 0.11 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 17 (0.038 g, 0.09 mmol, 79%) as a white solid. LCMS m/z (%)=443 (M+H⁷⁹Br, 99),466 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.30 (s, 1H), 8.19 (s, 1H), 8.13 (t, J=1.8 Hz, 1H), 7.80 (dd, J=1.4, 8.1 Hz, 1H), 7.70 (dd, J=2.7,9.0 Hz, 1H), 7.62 (d, J=7.7 Hz, 1H), 7.49 (s, 1H), 7.44 (d, J=2.7 Hz, 1H), 7.41 (t, J=7.9 Hz, 1H), 7.15 (d, J=9.0 Hz, 1H).
Example 1.25Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-methoxy-phenyl)-urea (Compound 72)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.032 g, 0.12 mmol) was treated with 3-methoxyphenyl isocyanate (0.018 g, 16.0 μL, 0.14 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.10 to afford Compound 72 (0.047 g, 0.11 mmol, 94%) as a solid film. LCMS m/z (%)=431 (M+H⁷⁹Br, 100), 433 (M+H⁸¹Br, 93).¹H NMR (400 MHz, acetone-d₆) δ: 8.13 (s, 2H), 7.68 (d, J=8.9 Hz, 1H), 7.49 (s, 1H), 7.43 (s, 1H), 7.30 (s, 1H), 7.16 (d, J=8.1 Hz, 1H), 7.12 (d, J=7.3 Hz, 1H), 6.98 (d, J=8.0 Hz, 1H), 3.81 (s, 3H), 3.76 (s, 3H). 3.68 (s, 3H).
Example 1.26Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-fluoro-phenyl)-urea (Compound 18)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.033 g, 0.12 mmol) was treated with 3-fluorophenyl isocyanate (0.017 g, 14.3 μL, 0.12 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 18 (0.040 g, 0.09 mmol, 82%) as a white solid. LCMS m/z (%)=419 (M+H⁷⁹Br, 100), 421 (M+H⁸¹Br, 91).¹H NMR (400 MHz, acetone-d₆) δ: 8.31 (s, 1H), 8.17 (s, 1H), 7.69 (dd, J=2.7, 9.0 Hz, 1H), 7.59 (dt, J=2.2, 12.0 Hz, 1H), 7.50 (s, 1H), 7.43 (d, J=2.6 Hz, 1H), 7.27 (dd, J=8.1, 15.0 Hz, 1H), 7.11-7.19 (m, 2H), 6.73 (ddd, J=2.4, 8.4 Hz, 1H), 3.82 (s, 1H), 3.69 (s, 1H).
Example 1.27Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2-fluoro-phenyl)-urea (Compound 25)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.034 g, 0.12 mmol) was treated with 2-fluorophenyl isocyanate (0.018 g, 14.4 μL, 0.12 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.10 to afford Compound 25 (0.045 g, 0.11 mmol, 91%) as a solid film. LCMS m/z (%)=419 (M+H⁷⁹Br, 99), 421 (M+H⁸¹Br, 100).¹H NMR (400 MHz, CDCl₃) δ: 8.08 (t, J=8.1 Hz, 1H), 7.59 (s, 1H), 7.54 (s, 1H), 7.53-7.59 (m, 1H), 7.40 (s, 1H), 7.12 (d, J=1.5 Hz, 1H), 6.95-7.12 (m, 3H), 6.94 (d, J=5.7 Hz, 1H), 3.77 (s, 3H), 3.70 (s, 3H).
Example 1.28Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-trifluoromethoxy-phenyl)-urea (Compound 19)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.032 g, 0.11 mmol) was treated with 4-(trifluoromethoxy)phenyl isocyanate (0.025 g, 18.4 μL, 0.12 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 19 (0.032 g, 0.07 mmol, 58%) as a white solid. LCMS m/z (%)=485 (M+H⁷⁹Br, 92), 487 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.31 (s, 1H), 8.19 (s, 1H), 7.70 (d, J=9.0 Hz, 1H), 7.66 (d, J=8.4 Hz, 2H), 7.51 (s, 1H), 7.45 (s, 1H), 7.25 (d, J=8.4 Hz, 2H), 7.15 (d, J=8.9 Hz, 1H), 3.83 (s, 3H), 3.70 (s, 3H).
Example 1.29Preparation of 1-Benzoyl-3-[3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 73)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.033 g, 0.12 mmol) was treated with benzoyl isocyanate (0.020 g, 0.12 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 73 (0.036 g, 0.08 mmol, 72%) as a white solid. LCMS m/z (%)=429 (M+H⁷⁹Br, 99), 431 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 10.92 (s, 1H), 9.85 (s, 1H), 8.12 (d, J=7.4 Hz, 2H), 7.76 (dd, J=2.6, 9.0 Hz, 1H), 7.68 (t, J=7.3 Hz, 1H), 7.62 (d, J=2.6 Hz, 1H), 7.57 (t, J=7.8 Hz, 2H), 7.51 (s, 1H), 7.21 (d, J=9.0 Hz, 1H), 3.86 (s, 3H), 3.71 (s, 3H).
Example 1.30Preparation of 1-Benzyl-3-[3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 74)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.034 g, 0.12 mmol) was treated with benzyl isocyanate (0.017 g, 16.0 μL, 0.13 mmol, 1.05 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.10 to afford Compound 74 (0.031 g, 0.08 mmol, 62%) as a solid film. LCMS m/z (%)=415 (M+H⁷⁹Br, 86), 417 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.05 (s, 1H), 7.64 (dd, J=2.7, 9.0 Hz, 1H), 7.47 (s, 1H), 7.40 (d, J=2.7 Hz, 1H), 7.27-7.37 (m, 4H), 7.22 (t, J=7.0 Hz, 1H), 7.07 (d, J=9.0 Hz, 1H), 6.21 (s, 1H), 4.41 (d, J=4.0 Hz, 2H), 3.79 (s, 3H), 3.66 (s, 3H).
Example 1.31Preparation of intermediate 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-ethoxy-phenylamine
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-ethoxy-phenylamine was prepared in a similar manner as described in Example 1.1 using 4-bromo-5-(2-ethoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole, SnCl₂-2H₂O in EtOH [0.225 g, 0.76 mmol, 81% for three steps from 2-(2-methyl-2H-pyrazol-3-yl)-4-nitro-phenol]. LCMS m/z (%)=296 (M+H⁷⁹Br, 100), 298 (M+H⁸¹Br, 98).¹H NMR (400 MHz, CDCl₃) δ: 7.52 (s, 1H), 6.86 (d, J=8.7 Hz, 1H), 6.77 (dd, J=2.2, 8.5 Hz, 1H), 6.62 (d, J=2.3 Hz, 1H), 3.82-4.00 (m, 2H), 3.73 (s, 3H), 3.24-3.58 (broad s, 2H), 1.24 (t, J=6.8 Hz, 3H).
• The intermediate 4-bromo-5-(2-ethoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole was prepared in the following manner:
• A. 2-(2-Methyl-2H-pyrazol-3-yl)-4-nitro-phenol: To methyl hydrazine (1.106 g, 1.3 mL, 23.5 mmol, 4.0 equiv.) was added 4-nitrochromone in DMSO (1.159 g/40 mL, 5.88 mmol, 1.0 equiv.) dropwise via syringe pump at 70° C., the crude reaction mixture was isolated by HPLC to afford 2-(2-methyl-2H-pyrazol-3-yl)-4-nitro-phenol (0.567 g, 2.59 mmol, 44%) as a white solid. LCMS m/z=220 (M+H).¹H NMR (400 MHz, acetone-d₆) δ: 8.24 (dd, J=2.9, 9.0 Hz, 1H), 8.13 (d, J=2.8 Hz, 1H), 7.46 (d, J=1.8 Hz, 1H), 7.26 (d, J=9.0 Hz, 1H), 6.36 (d, J=1.8 Hz, 1H), 3.77 (s, 3H).
• B. 5-(2-Ethoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole (General Alklyation Procedure): To a stirred solution of 2-(2-methyl-2H-pyrazol-3-yl)-4-nitro-phenol (0.206 g, 0.94 mmol) in a mixture of DMF/THF (1 mL/5 mL) was added NaH (60%, 0.082 g, 1.88 mmol, 2.0 equiv.) at 0° C. It was stirred for 30 mins, iodoethane (0.444 g, 0.23 mL, 3.0 equiv.) was then added, the mixture was warmed up to 70° C. and stirred until the consumption of the starting material. It was quenched with saturated NH₄Cl, diluted with EtOAc, washed with water and the aqueous phase was extracted with EtOAc (3×50 mL). The combined organic phase was washed with brine, dried over MgSO₄, filtered and evaporated. The crude reaction mixture was subjected to the bromination without any purification. LCMS m/z=248 (M+H).¹H NMR (400 MHz, CDCl₃) δ: 8.33 (dd, J=2.5, 9.1 Hz, 1H), 8.21 (d, J=2.5 Hz, 1H), 7.57 (d, J=1.3 Hz, 1H), 7.07 (d, J=9.1 Hz, 1H), 6.34 (s, 1H), 4.22 (dd, J=7.0, 13.9 Hz, 2H), 3.78 (s, 3H), 1.44 (t, J=6.8 Hz, 3H).
• C. 4-Bromo-5-(2-ethoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole: The crude reaction mixture of 5-(2-ethoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole was treated with NBS in DMF, in a similar manner as described in Example 1. 1, Step D, provided brominated compound 4-bromo-5-(2-ethoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole. It was reduced directly to the aniline as described in this example above. LCMS m/z (%)=326 (M+H⁷⁹Br, 88), 328 (M+H⁸¹Br, 100).¹H NMR (400 MHz, CDCl₃) δ: 8.38 (dd, J=2.7, 9.2 Hz, 1H), 8.22 (d, J=2.7 Hz, 1H), 7.59 (s, 1H), 7.11 (d, J=9.2 Hz, 1H), 4.14-4.32 (m, 2H), 3.76 (s, 3H), 1.43 (t, J=6.8 Hz, 3H).
Example 1.32Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-ethoxy-phenyl]-3-(4Chloro-phenyl)-urea (Compound 67)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-ethoxy-phenylamine (0.040 g, 0.13 mmol) was treated with 4-chlorophenyl isocyanate (0.023 g, 0.15 mmol, 1.1 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 67 (0.034 g, 0.08 mmol, 56%) as a white solid. LCMS m/z (%)=449 (M+H⁷⁹Br³⁵Cl, 72), 451 (M+H⁸¹Br³⁵Cl, 100), 453 (M+H⁸¹Br³⁷Cl, 26).¹H NMR (400 MHz, acetone-d₆) δ: 8.22 (s, 1H), 8.14 (s, 1H), 7.66 (dd, J=2.7, 9.0 Hz, 1H), 7.56 (d, J=8.8 Hz, 2H), 7.49 (s, 1H), 7.43 (d, J=2.7 Hz, 1H), 7.28 (d, J=8.8 Hz, 2H), 7.12 (d, J=9.0 Hz, 1H), 3.98-4.18 (m, 2H), 3.71 (s, 3H), 1.28 (t, J=7.1 Hz, 3H).
Example 1.33Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-ethoxy-phenyl]-3-(4-fluoro-phenyl)-urea (Compound 68)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-ethoxy-phenylamine (0.039 g, 0.13 mmol) was treated with 4-fluorophenyl isocyanate (0.020 g, 16.6 μL, 0.14 mmol, 1.1 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 68 (0.034 g, 0.08 mmol, 59%) as a white solid. LCMS m/z (%)=433 (M+H⁷⁹Br, 100), 435 (M+H⁸¹Br, 99).¹H NMR (400 MHz, acetone-d₆) δ: 8.13 (s, 1H), 8.11 (s, 1H), 7.66 (dd, J=2.7, 8.9 Hz, 1H), 7.50-7.57 (m, 2H), 7.49 (s, 1H), 7.42 (d, J=2.7 Hz, 1H), 7.11 (d, J=8.9 Hz, 1H), 7.04 (t, J=8.8 Hz, 2H), 3.964.18 (m, 2H), 3.71 (s, 3H), 1.28 (t, J=7.1 Hz, 3H).
Example 1.34Preparation of intermediate 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-isopropoxy-phenylamine
• The crude reaction mixture of 4-bromo-5-(2-isopropoxy-5-nitro-phenyl)-l1-methyl-1H-pyrazole (as described below) was reduced in the presence of SnCl₂.2H₂O, in a similar manner as described in Example 1.1, providing 3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-isopropoxy-phenylamine (0.043 g, 0.14 mmol, 50% for three steps). LCMS m/z (%)=310 (M+H⁷⁹Br, 99), 312 (M+H⁸¹Br, 100).¹H NMR (400 MHz, CDCl₃) δ: 7.51 (s, 1H), 6.89 (d, J=8.8 Hz, 1H), 6.76 (dd, J=2.7, 8.6 Hz, 1H), 6.62 (d, J=2.7 Hz, 1H), 4.08 (ddd, J=6.1, 6.1, 12,2 Hz, 1H), 3.74 (s, 3H), 1.21 (d, J=6.1 Hz, 3H), 1.01 (d, J=6.1 Hz, 33H).
• Intermediate 4-bromo-5-(2-isopropoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole was prepared in the following manner:
• A. 5-(2-Isopropoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole: To a stirred solution of 2-(2-methyl-2H-pyrazol-3-yl)-4-nitro-phenol (0.061 g, 0.28 mmol) in DMF (3 mL) was added K₂CO₃(0.077 g, 0.56 mmol, 2.0 equiv.) at r.t., it was stirred for 30 mins and isopropyl bromide ( 110 μL, 0.146 g, 1.16 mmol, 4.0 equiv.) was added. The mixture was stirred at 50° C. until the consumption of starting material was complete. The reaction mixture was diluted with EtOAc, washed with water and the aqueous phase was extracted with EtOAc. The combined organic phase was washed with brine, dried over MgSO₄, filtered and evaporated. LCMS m/z=262 (M+H).¹H NMR (400 MHz, CDCl₃) δ: 8.31 (dd, J=2.8, 9.2 Hz, 1H), 8.20 (d, J=2.8 Hz, 1H), 7.56 (s, 1H), 7.06 (d, J=9.2 Hz, 1H), 6.3 (s, 1H), 4.74 (ddd, J=6.1, 6.1, 12.1 Hz, 1H), 1.37 (s, 3H), 1.36 (s, 3H).
• B. 4-Bromo-5-(2-isopropoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole: The crude reaction mixture of 5-(2-isopropoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole was brominated, in a similar manner as described in Example 1. 1, Step D, providing 4-bromo-5-(2-isopropoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole. LCMS m/z (%)=340 (M+H⁷⁹Br, 85), 342 (M+H⁸¹Br, 100).¹H NMR (400 MHz, CDCl₃) δ: 8.36 (dd, J=2.8, 9.2 Hz, 1H), 8.20 (d, J=2.8 Hz, 1H), 7.57 (s, 1H), 7.10 (d, J=9.2 Hz, 1H), 4.73 (ddd, J=6.1, 6.1, 12.1 Hz, 1H), 1.39 (d, J=6.1 Hz, 31H), 1.32 (d, J=6.0 Hz, 3H).
Example 1.35Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-isopropoxy-phenyl]-3-(4-Chloro-phenyl)-urea (Compound 59)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-isopropoxy-phenylamine (0.024 g, 0.08 mmol) was treated with 4-chlorophenyl isocyanate (0.014 g, 0.09 mmol, 1.1 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.10 to afford Compound 59 (0.034 g, 0.07 mmol, 91%) as a white solid. LCMS m/z (%) 463 (M+H⁷⁹Br³⁵Cl, 82), 465 (M+H⁸¹Br³⁵Cl, 100), 467 (M+H⁸¹Br³⁷Cl, 29).¹H NMR (400 MHz, acetone-d₆) δ: 8.24 (s, 1H), 8.17 (s, 1H), 7.65 (dd, J=2.5, 8.9 Hz, 1H), 7.55 (d, J=8.6 Hz, 2H), 7.49 (s, 1H), 7.42 (d, J=2.5 Hz, 1H), 7.28 (d, J=8.6 Hz, 2H), 4.42-4.52 (m, 1H), 3.70 (s, 3H), 1.26 (d, J=6.0 Hz, 3H), 1.11 (d, J=6.0 Hz, 31H).
Example 1.36Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-isopropoxy-phenyl]-3-(4-fluoro-phenyl)-urea (Compound 60)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-isopropoxy-phenylamine (0.027 g, 0.09 mmol) was treated with 4-fluorophenyl isocyanate (0.013 g, 11.0 μL, 0.10 mmol, 1.1 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 60 (0.015 g, 0.03 mmol, 38%) as a white solid. LCMS m/z (%)=447 (M+H⁷⁹Br, 98), 449 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.11 (s, 2H), 7.65 (dd, J=2.4, 8.9 Hz, 1H), 7.54 (dd, J=4.9, 8.7 Hz, 2H), 7.49 (s, 1H), 7.41 (d, J=2.6 Hz, 1H), 7.12 (d, J=8.9 Hz, 1H), 7.04 (t, J=8.8 Hz, 2H), 4.404.52 (m, 1H), 3.70 (s, 3H), 1.26 (d, J=6.0 Hz, 3H), 1.11 (d, J=6.0 Hz, 3H).
Example 1.37Preparation of 4-Benzyloxy-3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-phenylamine
• The reaction mixture of 5-(2-benzyloxy-5-nitro-phenyl)-4-bromo-l1-methyl-1H-pyrazole was reduced in the presence of SnCl₂.2H₂O, in a similar manner as described in Example 1. 1, providing 4-benzyloxy-3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-phenylamine (0.079 g, 0.22 mmol, 39% for three steps). LCMS m/z (%)=358 (M+H⁷⁹Br, 98), 360 (M+H⁸¹Br, 100).¹H NMR (400 MHz, CDCl₃) δ: 7.45 (s, 1H), 7.15-7.26 (m, 3H), 7.10 (d, J=6.6 Hz, 2H), 6.83 (d, J=8.7 Hz, 1H), 6.66 (dd, J=2.8, 8.6 Hz, 1H), 6.55 (d, J=2.8 Hz, 1H), 4.83 (AB quartet, J=12.0, 17.2 Hz, 2H), 3.62 (s, 3H).
• The intermediate 5-(2-benzyloxy-5-nitro-phenyl)-4-bromo-1-methyl-1H-pyrazole was prepared in the following manner:
• A. 5-(2-Benzyloxy-5-nitro-phenyl)-1-methyl-1H-pyrazole: 2-(2-Methyl-2H-pyrazol-3-yl)-4-nitro-phenol (0.124 g, 0.57 mmol) was treated with NaH (0.049 g, 1.13 mmol, 2.0 equiv.) and benzyl bromide (0.297 g, 0.21 mL, 1.70 mmol, 3.0 equiv.) in a mixture of DMF[THF (2 mL/4 mL), in a similar manner as described in Example 1.31, Step B, providing 5-(2-benzyloxy-5-nitro-phenyl)-1-methyl-1H-pyrazole. LCMS m/z=310 (M+H).¹H NMR (400 MHz, CDCl₃) δ: 8.32 (dd, J=2.8, 9.1 Hz, 1H), 8.24 (d, J=2.8 Hz, 1H), 7.59 (d, J=1.7 Hz, 1H), 7.22-7.45 (m, 5H), 7.16 (d, J=9.1 Hz, 1H), 6.37 (d, J=1.7 Hz, 1H), 5.25 (s, 2H), 3.77 (s, 3H).
• B. 5-(2-Benzyloxy-5-nitro-phenyl)-4-bromo-1-methyl-1H-pyrazole: The crude reaction mixture of5-(2-benzyloxy-5-nitro-phenyl)-1-methyl-1H-pyrazole was treated with NBS (0.113 g, 0.63 mmol, 1.1 equiv.), in a similar manner as described in Example 1. 1, Step D, providing to 5-(2-Benzyloxy-5-nitro-phenyl)-4-bromo-1-methyl-1H-pyrazole. LCMS m/z (%)=388 (M+H⁷⁹Br, 100), 390 (M+H⁸¹Br, 94).¹H NMR (400 MHz, CDCl₃) δ: 8.36 (dd, J=2.8, 9.2 Hz, 1H), 8.23 (d, J=2.8 Hz, 1H), 7.59 (s, 1H), 7.25-7.42 (m, 5H), 7.19 (d, J=9.2 Hz, 1H), 5.24 (s, 2H), 3.73 (s, 3H).
Example 1.38Preparation of 1-[4-Benzyloxy-3-(4-bromo-2-methyl-2H-pyrazol-3-yl)phenyl]-3-(4-Chloro-phenyl)-urea (Compound 61)
• 4-Benzyloxy-3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-phenylamine (0.023 g, 0.09 mmol) was treated with 4-chlorophenyl isocyanate (0.016 g, 0.100 mmol, 1.1 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 61 (0.019 g, 0.04 mmol, 42%) as a white solid. LCMS m/z (%)=511 (M+H⁷⁹Br³⁵Cl, 82), 513 (M+H⁸¹Br³⁵Cl, 100), 515 (M+H⁸¹Br³⁷Cl, 33).¹H NMR (400 MHz, acetone-d₆) δ: 8.22 (s, 1H), 8.16 (s, 1H), 7.66 (dd, J=2.4, 8.9 Hz, 1H), 7.55 (d, J=8.7 Hz, 2H), 7.50 (s, 1H), 7.46 (d, J=2.5 Hz, 1H), 7.28-7.35 (m, 5H), 7.28 (d, J=8.7 Hz, 2H), 7.22 (d, J=8.9 Hz, 1H), 5.13 (AB quartet, J=12.0, 24.3 Hz, 2H), 3.69 (s, 3H).
Example 1.39Preparation of 1-14-Benzyloxy-3-(4-bromo-2-methyl-2 H-pyrazol-3-yl)phenyl]-3-(4-fluoro-phenyl)-urea (Compound 62)
• 4-Benzyloxy-3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-phenylamine (0.031 g, 0.09 mmol) was treated with 4-fluorophenyl isocyanate (0.013 g, 11.0 μL, 0.10 mmol, 1.1 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 62 (0.011 g, 0.02 mmol, 26%) as a white solid. LCMS m/z (%)=511 (M+H⁷⁹Br, 82), 513 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.12 (s, 2H), 7.66 (dd, J=2.6, 8.9 Hz, 1H), 7.54 (dd, J=4.8, 9.0 Hz, 2H), 7.50 (s, 1H), 7.47 (d, J=2.6 Hz, 1H), 7.25-7.36 (m, 5H), 7.22 (d, J=8.9 Hz, 1H), 7.04 (t, J=8.8 Hz, 2H), 5.13 (AB quartet, J=12.0, 24.4 Hz, 2H), 3.69 (s, 3H).
Example 1.40Preparation of intermediate 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(4-chloro-benzyloxy)-phenylamine
• The crude reaction mixture of 4-bromo-5-[2-(4-chloro-benzyloxy)-5-nitro-phenyl]-1-methyl-1H-pyrazole (as described below) was treated with SnCl₂.2H₂O (0.378 g, 1.64 mmol, 4.0 equiv.) in EtOH (5 mL), in a similar manner as described in Example 1.1, providing aniline 3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-(4-chloro-benzyloxy)-phenylamine (0.114 g, 0.29 mmol, 71% for two steps). LCMS m/z (%)=392 (M+H⁷⁹Br³⁵Cl, 70), 394 (M+H⁸¹Br³⁵Cl, 100), 396 (M+H⁸¹Br³⁷Cl, 23).¹H NMR (400 MHz, CDCl₃) δ: 7.54 (s, 1H), 7.28 (d, J=8.2 Hz, 2H), 7.11 (d, J=8.2 Hz, 2H), 6.90 (d, J=8.7 Hz, 1H), 6.76 (dd, J=2.7, 8.7 Hz, 1H), 6.63 (d, J=2.7 Hz, 1H), 4.86 (AB quartet, J=12.1, 20.9 Hz, 2H), 3.71 (s, 3H).
• The intermediate 4-bromo-5-[2-(4-chloro-benzyloxy)-5-nitro-phenyl]-1-methyl-1H-pyrazole was prepared in the following manner:
• A. 5-[2-(4-Chloro-benzyloxy)-5-nitro-phenyl]-1-methyl-1H-pyrazole: 2-(2-Methyl-2H-pyrazol-3-yl)-4-nitro-phenol (0.143 g, 0.65 mmol) was treated with NaH (0.057 g, 1.30 mmol, 2.0 equiv.) and 4-chlorobenzyl bromide (0.332 g, 1.96 mmol, 3.0 equiv.) in a mixture of DMF/THF (0.9 mL/2.5 mL), in a similar manner as described in Example 1.31, Step B, providing 5-[2-(4-chloro-benzyloxy)-5-nitro-phenyl]-1-methyl-1H-pyrazole (0.142 g, 0.41 mmol, 63%) as an oil. LCMS m/z (%)=344 (M+H³⁵Cl, 100), 346 (M+H³⁷Cl, 39).¹H NMR (400 MHz, CDCl₃) δ: 8.33 (dd, J=2.8, 9.1 Hz, 1H), 8.23 (d, J=9.1 Hz, 1H), 7.58 (d, J=1.7 Hz, 1H), 7.36 (d, J=8.3 Hz, 2H), 7.21 (d, J=8.3 Hz, 1H), 7.13 (d, J=9.1 Hz, 1H), 6.36 (d, J=1.7 Hz, 1H), 5.20 (s, 2H), 3.75 (s, 3H).
• B. 4-Bromo-5-[2-(4-chloro-benzyloxy)-5-nitro-phenyl]-1-methyl-1H-pyrazole: 5-[2-(4-Chloro-benzyloxy)-5-nitro-phenyl]-1-methyl-1 H-pyrazole was treated with NBS (0.082 g, 0.45 mmol, 1.05 equiv.), in a similar manner as described in Example 1.1, Step D, providing 4-bromo-5-[2-(4-chloro-benzyloxy-5-nitro-phenyl]-1-methyl-1H-pyrazole. LCMS m/z (%)=422 (M+H⁷⁹Br³⁵Cl, 85), 424 (M+H⁸¹Br³⁵Cl, 100), 426 (M+H⁸¹Br³⁷Cl, 26).¹H NMR (400 MHz, CDCl₃) δ: 8.37 (dd, J=2.7, 9.2 Hz, 1H), 8.22 (d, J=2.7 Hz, 1H), 7.59 (s, 1H), 7.34 (d, J=8.3 Hz, 2H), 7.21 (d, J=8.3 Hz, 2H), 7.16 (d, J=9.2 Hz, 1H), 5.20 (AB quartet, J=12.1, 15.2 Hz, 2H), 3.72 (s, 3H).
Example 1.41Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(4-Chloro-benzyloxy)-phenyl]-3-(4-Chloro-phenyl)urea (Compound 63)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(4-chloro-benzyloxy)-phenylamine (0.029 g, 0.08 mmol) was treated with 4-chlorophenyl isocyanate (0.014 g, 0.09 mmol, 1.2 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 63 (0.027 g, 0.05 mmol, 65%) as a white solid. LCMS m/z (%)=545 (M+H⁷⁹Br³⁵Cl³⁵Cl, 65), 547 (M+H⁷⁹Br³⁵Cl³⁷Cl⁸¹Br³⁵C³⁵Cl, 100), 549 (M+H⁸¹Br³⁵Cl³⁷Cl⁷⁹Br³⁷Cl³⁷Cl, 45), 551 (M+H⁸¹Br³⁷Cl³⁷Cl, 6).¹H NMR (400 MHz, acetone-d₆) δ: 8.23 (s, 1H), 8.17 (s, 1H), 7.66 (dd, J=2.7, 9.0 Hz, 1H), 7.56 (d, J=8.9 Hz,.2H), 7.50 (s, 1H), 7.46 (d, J=2.7 Hz, 1H), 7.37 (d, J=8.7 Hz, 2H), 7.33 (d, J=8.7 Hz, 2H), 7.28 (d, J=8.9 Hz, 2H), 7.22 (d, J=9.0 Hz, 1H), 5.14 (AB quartet, J=12.3, 24.8 Hz, 2H), 3.69 (s, 3H).
Example 1.42Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(4-Chloro-benzyloxy)-phenyl]-3-(4-fluoro-phenyl)-urea (Compound 64)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(4-chloro-benzyloxy)-phenylamine (0.032 g, 0.08 mmol) was treated with 4-fluorophenyl isocyanate (0.014 g, 11.1 μL, 0.10 mmol, 1.2 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.2 to afford Compound 64 (0.023 g, 0.04 mmol, 54%) as a white solid. LCMS m/z (%)=545 (M+H⁷⁹Br³⁵Cl, 65), 547 (M+H⁸¹Br³⁵Cl, 100), 549 (M+H⁸¹Br³⁷Cl, 25).¹H NMR (400 MHz, acetone-d₆) δ: 8.13 (s, 2H), 7.66 (dd, J=2.7, 9.0 Hz, 1H), 7.51-7.56 (m, 3H), 7.50 (s, 1H), 7.46 (d, J=2.7 Hz, 1H), 7.37 (d, J=8.7 Hz, 2H), 7.33 (d, J=8.7 Hz, 2H), 7.21 (d, J=9.0 Hz, 1H), 7.05-7.75 (m, 2H), 5.14 (AB quartet, J=12.3, 24.8 Hz, 2H), 3.69 (s, 3H).
Example 1.43Preparation of intermediate 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-phenethyloxy-phenylamine
• The crude reaction mixture of 4-bromo-1-methyl-5-(5-nitro-2-phenethyloxy-phenyl)-1H-pyrazole (as described below) was reduced with SnCl₂.2H₂O (0.387 g, 1.68 mmol, 4.0 equiv.) in EtOH, in a similar manner as described in Example 1. 1, providing aniline 3-(4-Bromo-2-methyl-2H-pyrazol-3- yl)-4-phenethyloxy-phenylamine (0.124 g, 0.33 mmol, 80% for two steps) as an oil. LCMS m/z (%)=372 (M+H⁷⁹Br, 94), 394 (M+H⁸¹Br, 100).¹H NMR (400 MHz, CDCl₃) δ: 7.54 (s, 1H), 7.18-7.33 (m, 3H), 7.08 (d, J=7.7 Hz, 2H), 6.85 (d, J=8.7 Hz, 1H), 6.77 (dd, J=2.7, 8.7 Hz, 1H), 6.61 (d, J=2.6 Hz, 1H), 3.99-4.15 (m, 2H), 3.53 (s, 3H), 3.10-3.40 (broad s, 2H), 2.83-3.00 (m, 2H).
• The intermediate 4-bromo-1-methyl-5-(5-nitro-2-phenethyloxy-phenyl)-H-pyrazole was prepared in the following manner:
• A. 1-Methyl-5-(5-nitro-2-phenethyloxy-phenyl)-1H-pyrazole: 2-(2-Methyl-2H-pyrazol-3-yl)-4-nitro-phenol (0.125 g, 0.57 mmol) was treated with NaH (0.049 g, 1.14 mmol, 2.0 equiv.) and (2-bromoethyl)benzene (0.323 g, 0.24 mL, 1.71 mmol, 3.0 equiv.) in a mixture of DMF/THF (0.9 mL/2.5 mL), in a similar manner as described in Example 1.31, Step B, providing 1-methyl-5-(5-nitro-2-phenethyloxy-phenyl)-1H-pyrazole (0.137 g, 0.42 mmol, 74%) as an oil. LCMS m/z (%) =324 (M+H).¹H NMR(400 MHz, CDCl₃) δ: 8.31 (dd, J=2.8, 9.1 Hz, 1H), 8.17 (d, J=2.8 Hz, 1H), 7.59 (s, 1H), 7.20-7.36 (m, 3H), 7.09 (d, J=7.1 Hz, 2H), 7.05 (d, J=9.2 Hz, 1H), 6.26 (s, 1H), 4.33 (t, J=6.6 Hz, 2H), 3.55 (s, 3H), 3.05 (t, J=6.6 Hz, 2H).
• B. 4-Bromo-1-methyl-5-(5-nitro-2-phenethyloxy-phenyl)-1H-pyrazole: 1-Methyl-5-(5-nitro-2-phenethyloxy-phenyl)-1H-pyrazole (0.137 g, 0.42 mmol) was treated with NBS (0.084 g, 0.46 mmol, 1.05 equiv.) in DMF (5 mL), in a similar manner as described in Example 1. 1, Step D, providing 4-bromo-1-methyl-5-(5-nitro-2-phenethyloxy-phenyl)-1H-pyrazole. LCMS m/z (%) =402 (M+H⁷⁹Br, 100), 404 (M+H⁸¹Br, 97).¹H NMR (400 MHz, CDCl₃) δ: 8.27 (dd, J=2.8, 9.2 Hz, 1H), 8.10 (d, J=2.8 Hz, 1H), 7.52 (s, 1H), 7.16-7.24 (m, 3H), 6.94-7.03 (m, 3H), 4.18-4.28 (m, 2H), 3.37 (s, 3H), 2.88-3.02 (m, 2H).
Example 1.44Preparation of 1-13-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-phenethyloxy-phenyl]-3-(4-Chloro-phenyl)-urea (Compound 66)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-phenethyloxy-phenylamine (0.028 g, 0.07 mmol) was treated with 4-chlorophenyl isocyanate (0.014 g, 0.09 mmol, 1.2 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.10 to afford Compound 66 (0.025 g, 0.05 mmol, 66%) as a solid film. LCMS m/z (%)=525 (M+H⁷⁹Br³⁵Cl, 85), 527 (M+H⁸¹Br³⁵Cl, 100), 529 (M+H⁸¹Br³⁷Cl, 31).¹H NMR (400 MHz, acetone-d₆) δ: 8.34 (s, 1H), 8.26 (s, 1H), 7.65 (dd, J=2.7, 8.9Hz, 1H), 7.56 (d, J=8.9 Hz, 2H), 7.53 (s, 1H), 7.43 (d, J=2.7Hz, 1H), 7.16-7.31 (m, 5 H), 7.09-7.16 (m, 3H), 4.11-4.30 (m, 2H), 3.51 (s, 3H), 2.86-3.06 (m, 2H).
Example 1.45Preparation of 1-13-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-phenethyloxy-phenyl]-3-(4-fluoro-phenyl)-urea (Compound 65)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-phenethyloxy-phenylamine (0.029 g, 0.08 mmol) was treated with 4-fluorophenyl isocyanate (0.013 g, 11.0 μL, 0.09 mmol, 1.2 equiv.) in CH₂Cl₂(1 mL), in a similar manner as described in Example 1.10 to afford Compound 65 (0.030 g, 0.06 mmol, 74%) as a solid film. LCMS m/z (%)=509 (M+H⁷⁹Br, 100), 511 (M+H⁸¹Br, 97).¹H NMR (400 MHz, acetone-d₆) δ: 8.22 (s, 2H), 7.63 (d, J=8.9 Hz, 1H), 7.48-7.56 (m, 3H), 7.41 (s, 1H), 7.15-7.28 (m, 3H), 7.08-7.16 (m, 3H), 7.03 (t, J=8.7 Hz, 2H), 4.08-4.30 (m, 2H), 3.50 (s, 3H), 2.86-3.06 (m, 2H).
Example 1.46Preparation of intermediate 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenylamine
• {2-[2-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-nitro-phenoxy]-ethyl }-dimethyl-amine (0.128 g, 0.35 mmol) was treated with SnCl₂2H₂O (0.319 g, 1.39 mmol, 4.0 equiv.) in EtOH (20 mL), in a similar manner as described in Example 1.1, providing 3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenylamine (0.067 g, 0.20 mmol, 56%) as an oil. LCMS m/z (%)=339 (M+H⁷⁹Br, 78), 341 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 7.68 (dd, J=2.5, 8.9 Hz, 1H), 7.55 (s, 1H), 7.45-7.51 (m, 2H), 4.62-4.82 (m, 2H), 3.76 (s, 3H), 3.65-3.76 (m, 2H), 2.87 (s, 6H).
• The intermediate {2-[2-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-nitro-phenoxy]-ethyl}-dimethyl-amine was prepared in the following manner:
• A. Dimethyl-{2-[2-(2-methyl-2H-pyrazol-3-yl)-4-nitro-phenoxy]-ethyl}-amine: 2-(2-Methyl-2H-pyrazol-3-yl)-4-nitro-phenol (0.344 g, 1.57 mmol) was treated with NaH (0.252 g, 6.29 mmol, 4.0 equiv.) and 2-(dimethylamino)ethyl chloride hydrochloride (0.458 g, 3.14 mmol, 2.0 equiv.) in a mixture of DMF/THF (2 mL/10 mL), in a similar manner as described in Example 1.31, Step B, providing dimethyl-{2-[2-(2-methyl-2H-pyrazol-3-yl)-4-nitro-phenoxy]-ethyl}-amine (0.280 g, 0.96 mmol, 62%) as a yellow solid. LCMS m/z (%)=291 (M+H).¹H NMR (400 MHz, CDCl₃) δ: 8.31 (dd, J=2.8, 9.1 Hz, 1H), 8.18 (d, J=2.8 Hz, 1H), 7.52 (d, J=1.9 Hz, 1H), 7.08 (d, J=9.1 Hz, 1H), 6.30 (d, J=1.9 Hz, 1H), 4.20 (t, J=5.7 Hz, 2H), 3.76 (s, 3H), 2.69 (t, J=5.7 Hz, 2H), 2.22 (s, 6H).
• B. {2-[2-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-nitro-phenoxy]-ethyl}-dimethyl-amine: Dimethyl-{2-[2-(2-methyl-2H-pyrazol-3-yl)-4-nitro-phenoxy]-ethyl}-amine (0.239 g, 0.82 mmol) in CH₂Cl₂(10 mL) was added Br₂(47 μL, 0.145 g, 0.91 mmol, 1.1 equiv.) in CH₂Cl₂(3.5 mL) dropwise at 0° C., the mixture was stirred at this temperature for 3 hrs. More Br₂(40 μL) was added and the mixture was stirred for another 2 hrs in order to consume the rest of the starting material. It was quenched by saturated Na₂S₂O₃, washed with saturated NaHCO₃and the aqueous phase was extracted with EtOAc. The combined organic phase was washed with brine, dried over MgSO₄, filtered and evaporated. The crude reaction mixture was purified by HPLC to provide {2-[2-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-nitro-phenoxy]-ethyl}-dimethyl-amine (0.128 g, 0.35 mmol, 42%). LCMS m/z (%)=369 (M+H⁷⁹Br, 100), 371 (M+H⁸¹Br, 97).¹H NMR (400 MHz, CDCl₃) δ: 8.45 (dd, J=2.6, 9.2 Hz, 1H), 8.21 (d, J=2.6 Hz, 1H), 7.59 (s, 1H), 7.19 (d, J=9.2 Hz, 1H), 4.34-4.56 (m, 2H), 3.60 (s, 3H), 3.23-3.50 (m, 2H), 2.59 (s, 6H).
Example 1.47Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenyl]-3-(4-Chloro-phenyl)-urea (Compound 69)
• To a stirred solution of 3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenylamine (0.033 g, 0.10 mmol) in CH₂Cl₂(2.0 mL) was added 4-chlorophenyl isocyanate (0.017 g, 0.11 mmol, 1.1 equiv.). The solvent was removed after the completion of the reaction and it was purified by the HPLC. The pure fractions were collected and CH₃CN was evaporated under vacuum. The residue was diluted with EtOAc and neutralized with saturated NaHCO₃, the EtOAc phase was washed with brine, dried over MgSO₄, filtered and evaporated. Compound 69 was obtained in 85% yield. LCMS m/z (%)=492 (M+H⁷⁹Br³⁵Cl, 78), 494 (M+H⁸¹Br³⁵Cl, 100), 496 (M+H⁸¹Br³⁷Cl, 28).¹H NMR (400 MHz, acetone-d₆) δ: 8.27 (s, 1H), 8.20 (1H), 7.66 (dd, J=2.7, 9.0 Hz, 1H), 7.56 (d, J=8.9 Hz, 2H), 7.48 (s, 1H), 7.43 (d, J=2.7 Hz, 1H), 7.29 (d, J=8.9 Hz, 2H), 7.14 (d, J=9.0 Hz, 1H), 3.98-4.20 (m, 2H), 3.73 (s, 1H), 2.48-2.68 (m, 2H), 2.16 (s, 6H).
Example 1.48Preparation of 1-13-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenyl]-3-(4-fluoro-phenyl)-urea (Compound 70)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenylamine (0.034 g, 0.10 mmol) was treated with 4-fluorophenyl isocyanate (0.015 g, 12.5 μL, 0.11 mmol, 1.1 equiv.) in CH₂Cl₂(2 mL), in a similar manner as described in Example 1.47 to afford Compound 70 (0.020 g, 0.04 mmol, 42%). LCMS m/z (%)=476 (M+H⁷⁹Br, 100), 478 (M+H⁸¹Br, 87).¹H NMR (400 MHz, acetone-d₆) δ: 8.17 (s, 2H), 7.66 (dd, J=2.7, 9.0 Hz, 1H), 7.50-7.58 (m, 2H), 7.48 (s, 1H), 7.43 (d, J=2.7 Hz, 1H), 7.13 (d, J=9.0 Hz, 1H), 7.04 (t, J=8.8 Hz, 2H), 3.98-4.20 (m, 2H), 3.73 (s, 3H), 2.49-2.66 (m, 2H), 2.16 (s, 6H).
Example 1.49Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-hydroxy-phenyl]-3-(4-chloro-phenyl)-urea (Compound 58)
• To Compound 1 (see Example 1.16) in CH₂Cl₂(1.170 g, 2.68 mmol) was added anhydrous AlCl₃(1.432 g, 10.74 mmol, 4.0 equiv.) slowly at 0° C., it was stirred under reflux overnight and then quenched with saturated NaHCO₃. The mixture was extracted with EtOAc, the combined organic phase was washed with water and brine, dried over MgSO₄, filtered and evaporated. It was first purified with SiO₂column chromatography (Eluent: EtOAc/Hexane=1/3 to 1/1) and the major fractions containing Compound 58 were then purified by HPLC. The pure fractions were neutralized with saturated NaHCO₃, extracted with EtOAc and dried with anhydrous MgSO₄. MgSO₄was filtered and the solvent was removed under vacuum to provide Compound 58 as a white solid. LCMS m/z (%)=421 (M+H⁷⁹Br³⁵Cl, 69), 423 (M+H⁸¹Br³⁵Cl, 100), 425 (M+H⁸¹Br³⁷Cl, 21).¹H NMR (400 MHz, acetone-d₆) δ: 8.47 (s, 1H), 8.16 (s, 1H), 8.04 (s, 1H), 7.44 (d, J=8.9 Hz, 2H), 7.38-7.43 (m, 1H), 7.35 (s, 1H), 7.26 (d, J=2.6 Hz, 1H), 7.15 (d, J=8.9 Hz, 2H), 6.87 (d, J=8.8 Hz, 1H), 3.62 (s, 3H).
Example 1.50Preparation of Intermediate 4-Methoxy-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine
• 5-(2-Methoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole (2.11 g, 9.06 mmol) was treated with SnCl₂.2H₂O (8.341 g, 36.22 mmol, 4.0 equiv.) in EtOH (50 mL), in a similar manner as described in Example 1.1, providing 4-methoxy-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (1.592 g, 7.8 3 mmol, 87%) as an oil. LCMS m/z (%)=204 (M+H).¹H NMR (400 MHz, CDCl₃) δ: 7.51 (d, J=1.8 Hz, 1H), 6.83 (d, J=8.7 Hz, 1H), 6.76 (dd, J=2.8, 8.7 Hz, 1H), 6.62 (d, J=2.8 Hz, 1H), 6.22 (d, J=1.8 Hz, 1H), 3.74 (s, 3H), 3.73 (s, 3H), 3.24-3.55 (broad s, 2H).
Example 1.51Preparation of 1-(4-Chloro-phenyl)3-[4-methoxy-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea (Compound 75)
• 4-Methoxy-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (0.291 g, 1.43 mmol) was treated with 4-chlorophenyl isocyanate (0.247 g, 1.57 mmol, 1.1 equiv.) in CH₂Cl₂(5 mL), in a similar manner as described in Example 1.2 to afford Compound 75 (0.415 g, 1.16 mmol, 81%) as a white solid. LCMS m/z (%)=357(M+H).¹H NMR (400 MHz, acetone-d₆) δ: 8.21 (s, 1H), 8.07 (s, 1H), 7.58 (dd, J=2.8, 8.9 Hz, 1H), 7.56 (d, J=8.8 Hz, 2H), 7.44 (d, J=2.7 Hz, 1H), 7.39 (d, J=1.8 Hz, 1H), 7.28 (d, J=8.8 Hz, 2H), 7.08 (d, J=8.9 Hz, 1H), 6.20 (d, J=1.8 Hz, 1H), 3.81 (s, 31H), 3.68 (s, 3H).
Example 1.52Preparation of Intermediate 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine
• 4-Chloro-5-(2-methoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole (2.27g, 8.5 mmol) was dissolved in dry EtOH (150 mL) and heated to 75° C. The heated solution was then treated with Sn(II) chloride dihydrate (9.6 g, 42.5 mmol) and stirred at 75° C. After three hours, the reaction was found to be complete by TLC and LCMS. The solvent was removed under reduced pressure. The residue was subsequently diluted with EtOAc (100 mL) and IN NaOH, neutralizing the reaction to a pH of approximately 6 or 7. The mix was then filtered through celite. The organic layer was separated, and the aqueous layer was extracted with EtOAc (2×50 mL). The organic layers were combined, dried over Na₂SO₄, filtered, and the solvent removed under reduced pressure. The residue was then purified by flash chromatography (Biotage, SiO₂, Hexanes/EtOAc gradient elution) to afford 1.73 g (86%) of 3-(4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine as a light brown solid. LCMS m/z (%)=240 (M+H³⁷Cl, 37), 238 (M+H³⁵Cl, 100).¹H NMR (400 MHz, CDCl₃) δ: 7.48 (s, 1H), 6.87 (d, J=8, 1H), 6.81 (dd, J_t=8, J₂=4, 1H), 6.63 (d, J=4, 1H), 3.72 (s, 3H), 3.70 (s, 3H).
• The intermediate 4-chloro-5-(2-methoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole was prepared in the following manner:
• 5-(2-Methoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole (2.37 g, 10.17 mmol) was dissolved in DMF (100 mL). The solution was then heated to 80° C. N-Chlorosuccinimide (1.49g, 11.1 mmol) was added at 80° C. under Argon gas. After two hours of continuous stirring, the reaction was checked by TLC and LCMS, and found to be incomplete. An additional aliquot of NCS (0.5 g, 3.7 mmol) was added, bringing the reaction to completion after 1.5 hours. While stirring, a portion of water (200 mL) was added to force the product to precipitate out of solution. After the precipitation was complete, the flask containing the solid was cooled in an ice water bath for 10 minutes. The solid was then filtered under vacuum and rinsed with water, yielding 2.4 g (89%) of 4-chloro-5-(2-methoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole. This material was used in the next step without purification. LCMS m/z (%)=267 (M+H, 100).¹H NMR (400 MHz, CDCl₃) δ: 8.41 (dd, J₁=8 Hz, J₂=4 Hz, 1H), 8.22 (d, J=4 Hz, 1H), 7.53 (s, 1H), 7.14 (d, J=12 Hz, 1H), 3.97 (s, 3H), 3.72 (s, 3H).
Example 1.53Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-fluoro-phenyl)-urea (Compound 28)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (20mg, 0.08 mmol) was dissolved in anhydrous CH₂Cl₂(150 mL) and treated with 4-Fluorophenyl isocyanate, Compound 28 began to precipitate out immediately as a white solid. The reaction was stirred at room temperature for three hours. Then, the flask containing the solid was cooled in an ice water bath for 20 minutes. The solid was then filtered under vacuum and rinsed with CH₂Cl₂, yielding 17.7 mg (26%) of Compound 28. LCMS m/z (%)=377 (M+H³⁷Cl, 39), 375 (M+H³⁵Cl, 100).¹H NMR (400 MHz, DMSO-d₆) δ: 8.95 (s, 1H), 8.93 (s, 1H), 7.86 (s, 1H), 7.81 (dd, J₁=8 Hz, J₂=4 Hz, 1H), 7.71 (dd, J₁=8 Hz, J₂=4 Hz, 2H), 7.62 (d, J=2, 1H), 7.41 (d, J=12 Hz, 1H), 7.38 (t, J=12 Hz, 2H), 4.01 (s, 3H), 3.86 (s, 3H).
Example 1.54Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-fluoro-phenyl)-urea (Compound 36)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 3-Fluorophenyl isocyanate in a similar manner to as described in Example 1.53, providing 0.5 mg (1%) of Compound 36: LCMS m/z (%)=377 (M+H³⁷Cl, 40), 375 (M+H³⁵Cl, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.23 (s, 1H), 7.45 (dt, J₁=12, J₂=4, J₃=2 Hz, 1H), 7.37 (s, 1H), 7.17 (d, J=24 Hz, 1H), 7.15 (dd, J₁=8 Hz, J₂=2 Hz, 1H), 7.03 (dd, J₁=8 Hz, J₂=4 Hz, 1H), 6.77 (d, J=2 Hz, 1H), 6.63 (td, J₁=8 Hz, J₂=4 Hz, 1H), 3.68 (s, 3H), 3.52 (s, 3H).
Example 1.55Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2,4-difiluoro-phenyl)-urea (Compound 29)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 2,4-difluorophenyl isocyanate in a similar manner as described in Example 1.53, providing 26.7 mg (36%) of Compound 29: LCMS m/z (%)=395 (M+H³⁷Cl, 35), 393 (M+H³⁵Cl, 100).¹H NMR (400 MHz, DMSO-d₆) δ: 9.00 (s, 1H), 8.43 (s, 1H), 8.03 (m, J₁=12 Hz, J₂=4 Hz, 1H), 7.56 (s, 1H), 7.50 (d, J₁=8 Hz, J₂=4 Hz, 1H), 7.34 (d, J=4 Hz, 1H),7.28 (m, J₁=12 Hz, J₂=4 Hz, 1H), 7.12 (d, J=8 Hz, 1H),7.01 (m, J₁=8 Hz, J₂=2 Hz, 1H), 3.72 (s, 3H), 3.56 (s, 3H).
Example 1.56Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3(3-methoxy-phenyl)-urea (Compound 30)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 3-Methoxyphenyl isocyanate in a similar manner as described in Example 1.53, providing 7.5 mg (27%) of Compound 30 (Note:Compound 30 did not precipitate out. Therefore, the CH₂Cl₂was removed under reduced pressure, the residue was dissolved in 5 mL DMSO, and purified by preparative HPLC): LCMS m/z (%)=389 (M+H³⁷Cl, 39), 387 (M+H³⁵Cl, 100).¹H NMR (400 MHz, acetone-d₆) δ: 7.99 (s, 1H), 7.49 (dd, J₁=8 Hz, J₂=2 Hz, 1H), 7.29 (d,J=8 Hz, 1H), 7.28 (s, 1H), 7.12 (t, J=2 Hz, 1H), 6.95 (d, J=2 Hz, 1H), 6.93 (d, J=4 Hz, 1H), 6.81 (dd, J₁=8 Hz, J₂=4 Hz, 1H), 6.37 (dd,J₁8 Hz, J₂=4 Hz, 1H), 3.63 (s, 3H), 3.57 (s, 3H), 3.47 (s, 3H).
Example 1.57Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2-trifluoromethoxy-phenyl)-urea (Compound 34)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 2-trifluoromethoxyphenyl isocyanate in a similar manner as described in Example 1.53, providing 1.5 mg (3%) of Compound 34: LCMS m/z (%)=440 (M+H³⁷Cl, 14), 438 (M+H³⁵Cl, 14).¹H NMR (400 MHz, acetone-d₆) δ: 8.19 (s, 1H), 7.90 (s, 1H), 7.43 (d, J=4 Hz, 1H), 7.25 (s, 1H), 7.04 (t, J=12 Hz, 2H), 6.99 (dd, J₁=8 Hz, J₂=2 Hz, 1H), 6.75 (d, J=4 Hz, 1H), 6.72 (d, J=4 Hz, 1H), 6.66 (d, J=2 Hz, 1H), 3.63 (s, 3H), 3.45 (s, 3H).
Example 1.58Preparation of 1-(3-Acetyl-phenyl)-3-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 35)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 3-Acetylphenyl isocyanate in a similar manner as described in Example 1.53, providing 3.7 mg (6%) of Compound 35 (Note: Compound 35 did not precipitate out. Therefore, the CH₂Cl₂was removed under reduced pressure, the residue was dissolved in 5 mL DMSO, and purified by preparative HPLC): LCMS m/z (%)=401 (M+H³⁷Cl, 27), 399 (M+H³⁵Cl, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.91 (s, 1H), 8.80 (s, 1H), 8.23 (s, 1H), 7.84 (d, J=8 Hz, 1H), 7.75 (dd, J₁=12 Hz, J₂=3 Hz, 1H), 7.62 (d, J=8 Hz, 1H), 7.56 (d, J=4 Hz, 1H), 7.49 (s, 1H), 7.43 (t, J=8 Hz, 1H), 7.16 (d, J=8 Hz, 1H), 3.69 (s, 3H), 3.42 (s, 3H).
Example 1.59Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-Chloro-phenyl)-urea (Compound 26)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 4-chlorophenyl isocyanate in a similar manner as described in Example 1.53, providing 12 mg (30%) of Compound 26: LCMS m/z (%)=393 (M+H³⁷Cl, 60), 391 (M+H³⁵Cl, 100).¹H NMR (400 MHz, DMSO-d₆) δ: 8.80 (s, 1H), 8.71 (s, 1H), 7.62 (s, 1H), 7.57 (dd, J₁=8 Hz, H₂=4 Hz, 1H), 7.49 )dd,J₁8 Hz, J₂=2 Hz, 2H), 7.39 (d, J=4 Hz, 1H), 7.33 (dd, J₁=8 Hz, J₂=2 Hz, 2H), 7.17 (d, J=8 Hz, 1H), 3.77 (s, 3H), 3.62 (s, 3H).
Example 1.60Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-isopropyl-phenyl)-urea (Compound 76)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 4-isopropylphenyl isocyanate in a similar manner as described in Example 1.53, providing 1.3 mg (2%) of Compound 76 (Note:Compound 76 did not precipitate out). Therefore, the CH₂Cl₂was removed under reduced pressure, the residue was dissolved in 5 mL DMSO, and purified by preparative HPLC): LCMS m/z (%)=401 (M+H³⁷Cl, 31), 399 (M+H³⁵Cl, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.63 (s, 1H), 8.52 (s, 1H), 7.59 (dd, J₁=8 Hz, J₂=4 Hz, 1H), 7.41 (d, J=2 Hz, 1H), 7.37 (dd, J₁=12 Hz, J₂=2 Hz, 2H), 7.33 (s, 1H), 7.17 (dd, J₁=8 Hz, J₂=2 Hz, 2H), 7.00 (d, J=12 Hz, 1H), 3.68 (s, 3H), 3.54 (s, 3H).
Example 1.61Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-2,4-dichloro-phenyl)-urea (Compound 77)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 2,4-dichlorophenyl isocyanate in a similar manner as described in Example 1.53, providing 16.4 mg (24%) of Comound 77 (Note:Comound 77 did not precipitate out. Therefore, the CH₂Cl₂was removed under reduced pressure, the residue was dissolved in 5 mL DMSO, and purified by preparative HPLC): LCMS m/z (%)=427 (M+H³⁷Cl, 72), 425 (M+H³⁵Cl, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.85 (s, 1H), 8.26 (dd, J₁=12 Hz, J₂=4 Hz, 1H) 7.90 (s, 1H), 7.59 (dd, J₁=8 Hz, J₂=4 Hz, 1H), 7.38 (d, J=4 Hz, 1H), 7.36 (s, 1H), 7.36 (s, 1H), 7.24 (dd, J₁=12 Hz, J₂=4 Hz, 1H), 7.05 (d, J=8 Hz, 1H), 3.72 (s, 3H), 3.56 (s, 3H).
Example 1.62Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-naphthalen-1-yl-urea (Compound 78)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 1-naphthyl isocyanate in a similar manner as described in Example 1.53, providing 21.1 mg (60%) of Compound 78: LCMS m/z (%)=409 (M+H³⁷Cl, 38), 407 (M+H³⁵Cl, 100).¹H NMR (400 MHz, DMSO-d₆)δ: 9.02 (s, 1H), 8.71 (s, 1H), 8.10 (d, J=8 Hz, 1H), 7.96 (d, J=8 Hz, 1H), 7.91 (d, J=8 Hz, 1H), 7.61 (s, 1H), 7.59 (t, J=4 Hz, 1H), 7.58 (s, 1H), 7.56 (t, J=2 Hz, 1H), 7.54 (dd, J, =4 Hz, J₂Hz, 1H), 7.45 (d, J=8 Hz, 1H), 7.41 (d, J=4 Hz, 1H), 7.16 (d, J=8 Hz, 1H), 3.75 (s, 3H), 3.60 (s, 3H).
Example 1.63Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-chloro-2-trifluoromethyl-phenyl)-urea (Compound 79)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 4-chloro-2-trifluoromethylphenyl isocyanate in a similar manner as described in Example 1.53, providing 4.4 mg (8%) of Compound 79 (Note:Compound 79 did not precipitate out. Therefore, the CH₂Cl₂was removed under reduced pressure, the residue was dissolved in 5 mL DMSO, and purified by preparative HPLC): LCMS m/z (%)=461 (M+H³⁷Cl, 60), 459 (M+H³⁵Cl, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.99 (s, 1H), 8.30 (s, 1H), 8.16 (dd, J₁=8 Hz, J₂=2 Hz, 1H), 8.01 (d, J=8 Hz, 1H), 7.66 (s, 1H), 7.64 (d, J=4 Hz, 1H), 7.45 (d, J=4 Hz, 1H), 7.43 (s, 1H), 7.12 (d, J=8 Hz, 1H), 3.79 (s, 3H), 3.63 (s, 3H).
Example 1.64Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-trifluoromethyl-phenyl)-urea (Compound 80)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 4-trifluoromethylphenyl isocyanate in a similar manner as described in Example 1.53, providing 8 mg (15%) of Compound 80 (Note:Compound 80 did not precipitate out. Therefore, the CH₂Cl₂was removed under reduced pressure, the residue was dissolved in 5 mL DMSO, and purified by preparative HPLC): LCMS m/z (%)=427 (M+H³⁷Cl, 22), 425 (M+H³⁵Cl, 100).¹H NMR (400 MHz, acetone-d6) δ: 8.48 (s, 1H), 8.24 (s, 1H), 7.56 (d, J=8 Hz, 2H), 7.50 (dd, J₁=8 Hz, J₂=2 Hz, 1H), 7.40 (d, J=8 Hz, 1H), 7.28 (d, J=4 Hz, 1H), 7.27 (s, 1H), 6.96 (d, J=12 Hz, 1H), 3.62 (s, 3H), 3.46 (s, 3H).
Example 1.65Preparation of 1-(4-Bromo-phenyl)3-[3-(4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 81)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 4-bromophenyl isocyanate in a similar manner as described in Example 1.53, providing 2.3 mg (6%) of Compound 81: LCMS m/z (%)=437 (M+H³⁷Cl, 100), 435 (M+H³⁵Cl, 82).¹H NMR (400 MHz, DMSO-d₆) δ: 8.97 (d, J=2 Hz, 2H), 8.80 (s, 1H), 8.70 (s, 1H), 7.61 (s, 1H), 7.53 (dd, J₁=12 Hz, J₂=8 Hz, 1H), 7.44 (t, J=4 Hz, 2H), 7.35 (d, J=4 Hz, 1H), 7.13 (d, J=8 Hz, 1H), 3.74 (s, 3H), 3.58 (s, 3H).
Example 1.66Preparation of 1-(3,5-Bis-trifluoromethyl-phenyl)-3-[3-(4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 82)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 3,5-Bis(trifluoromethyl)phenyl isocyanate in a similar manner as described in Example 1.53, providing 21.5 mg (32%) of Compound 82: LCMS m/z (%)=495 (M+H³⁷Cl, 41), 493 (M+H³⁵Cl, 100).¹H NMR (400 MHz, DMSO-d₆) δ: 9.58 (s, 1H), 9.18 (s, 1H), 8.31 (s, 2H), 7.80 (s, 1H), 7.79 (s, 1H), 7.79 (dd, J₁=8 Hz, J₂=4 Hz, 1H), 7.59 (d, J=2 Hz, 1H), 7.36 (d, =8 Hz, 1H), 3.96 (s, 3H), 3.80 (s, 3H).
Example 1.67Preparation of Intermediate 3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine
• Two reduction methods were utilized in the preparation of the 3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine as shown below:
• Reduction Method A: 4-Fluoro-5-(2-methoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole (205 mg, 0.817 mmol) in EtOH (25 mL) was treated with Sn(II) chloride dihydrate (626.3 mg, 2.45 mmol) and heated to 50° C. for 12 hours. The reaction was allowed to cool to room temperature and 10% NaOH (100 ml) was added. EtOAc (50 ml) was added and the organic layer was separated. The aqueous layer was extracted with EtOAc (2×50 mL) and the organics combined, dried over Na₂SO₄, filtered, and the solvent removed under reduced pressure. The residue was dissolved in DMSO (5 ml), and purified by preparative HPLC to afford 85 mg (47%) of 3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine as a light brown oil. LCMS m/z (%)=222 (M+H, 100).¹H NMR (400 MHz, CDCl₃) δ: 7.38 (d, J_H,F=4.8 Hz, 1H), 6.86 (d, J=8.8 Hz, 1H), 6.79 (dd, J, =8.8 Hz, J₂=2.8 Hz, 1H), 6.64 (d, J=2.8 Hz, 1H), 3.75 (s, 3H), 3.69 (s,3H), 3.21 (s, 2H).¹⁹F NMR (376 MHz, CDCl₃) δ: 175.50 (d, J_H,F=5.3 Hz, 1F).
• Reduction Method B: 4-Fluoro-5-(2-methoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole (109 mg, 0.434 mmol) in EtOH (10 mL) was treated with Pd—C (10 wt. %, Degussa) and a balloon of H₂was allowed to bubble through the slurry. The reaction mixture was filtered through celite and the solvent was removed under reduced pressure to afford 93 mg (97%) of 3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine as a light brown oil. LCMS m/z (%)=222 (M+H, 100).¹H NMR (400 MHz, CDCl₃) δ: 7.38 (d, J_H,F=4.4 Hz, 1H), 6.86 (d, J=8.8 Hz, 1H), 6.78 (dd, J₁=8.8 Hz, J₂=2.8 Hz, 1H), 6.63 (d, J=2.8 Hz, 1H), 3.74 (s, 3H), 3.68 (s,3H), 3.53 (s, 2H).¹⁹F NMR (376 MHz, CDCl₃) δ: −175.50 (d, J_H,F=5.3 Hz, 1F).
• The intermediate 4-fluoro-5-(2-methoxy-5-nitro-phenyl)-1-methyl-i H-pyrazole used in Reduction Methods A and B was prepared in the following manner:
• 5-(2-Methoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole (300.0 mg, 1.29 mmol) was dissolved in ACN (15 ml) in apolypropylene 20 mL scintillation vial. To this solution, Selectfluor (913.9 mg, 2.58 mmol) was added and the mixture was degassed with argon and heated to 80° C. for 6 hours. The solvent was removed under reduced pressure and the residue was dissolved in 50 mL EtOAc and 30 mL 3N HCl. The organic layer was separated and the aqueous layer was extracted with EtOAc (2×50 ml). The organic layers were combined, dried over Na₂SO₄, filtered, and the solvent removed under reduced pressure. The residue was then purified by flash chromatography (Biotage SiO₂, Hexanes (0.01%TEA)/EtOAc gradient elution) to afford 108 mg (33%) of 4-fluoro-5-(2-methoxy-5-nitro-phenyl)-1-methyl-1H-pyrazole as a white solid. LCMS m/z (%)=252 (M+H, 100).¹H NMR (400 MHz, CDCl₃) δ: 8.39 (d, J=9.2 Hz, 1H), 8.22 (s, 1H), 7.44 (d, J_H,F=4.4 Hz, 1H), 7.12 (d, J=9.2 Hz, 1H) 3.98 (s, 3H), 3.77 (s,3H).¹⁹F NMR (376 MHz, CDCl₃) δ: −175.50 (d, J_H,F=5.3 Hz, 1F).
Example 1.68Preparation of 1-(4-Chloro-phenyl)3-[3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-methoxy-phenyl]-urea (Compound 27)
• 3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (49 mg, 0.22 mmol) was dissolved in 3 mL of CH₂Cl₂, treated with 4-chlorophenylisocyanate (40 mg, 0.27 mmol), and stirred at room temperature overnight. The solvent was removed under reduced pressure, dissolved in DMSO (5 ml), and purified by preparative HPLC to afford Compound 27 as a white solid, 41 mg, 49% yield: LCMS m/z (%)=377 (M+H³⁷Cl, 31), 375 (M+H³⁵Cl, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.77 (s, 1H), 8.67 (s, 1H), 7.66 (ddd, J₁=9.0 Hz, J₂=2.6 Hz, 1H), 7.60 (d, J=9.2 Hz, 2H), 7.54 (d, J=2.8 Hz, 1H), 7.38 (d, J_H,F=4.4 Hz, 1H), 7.27 (d, J=8.8 Hz, 2H), 7.12 (d, J=8.8 Hz, 1H), 3.83 (s, 3H), 3.65 (s, 3H).¹⁹F NMR (376 MHz, acetone-d₆) δ: −177.39 (d, J_H,F=5.3 Hz, 1F).
Example 1.69Preparation of 1-[3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-fluoro-phenyl)-urea (Compound 31)
• 3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (45 mg, 0.20 mmol) was dissolved in 3 mL of CH₂Cl₂, treated with 4-fluorophenylisocyanate (28 uL, 0.24 mmol), and stirred at room temperature overnight. The compound of interest precipitated out of solution and was filtered and washed with CH₂Cl₂to afford Compound 31 as a white solid, 56 mg, 77% yield: LCMS m/z (%)=359 (M+H, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.12 (s, 1H), 8.08 (s, 1H), 7.63 (ddd, J₁=9.0 Hz, J₂=2.6 Hz, 1H), 7.54 (m, 2H), 7.48 (d, J=2.8 Hz, 1H), 7.38 (d, J_H,F=4.8 Hz, 1H), 7.13 (d, J=8.8 Hz, 1H), 7.05 (dd, J₁=9.0 Hz, J₂=9.0 Hz, 2H), 3.83 (s, 3H), 3.65 (s, 3H),¹⁹F NMR (376 MHz, acetone-d₆) δ: −123.08 (m, 1F), −177.41 (d, J_H,F=5.3 Hz, 1F).
Example 1.70Preparation of 1-(3,4-Difluoro-phenyl)-3-[3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 32)
• 3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 3,4-difluorophenylisocyanate, in a similar manner as described in Example 1.69, providing 27 mg (63% yield) of Compound 32: LCMS m/z (%)=377 (M+H, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.28 (s, 1H), 8.12 (s, 1H), 7.74 (ddd, J₁=13.5 Hz, J₂=7.3 Hz, J₃=2.5 Hz, 1H), 7.63 (ddd, J₁=8.8 Hz, J₂=2.8 Hz, 1H), 7.47 (d, J=2.8 Hz, 1H), 7.38 (d, J_H,F=4.4 Hz, 1H), 7.16 (m, 3H), 3.84 (s, 3H), 3.65 (s, 3H),¹⁹F NMR (376 MHz, acetone-d₆) δ: −138.89 (m, 1F), −148.38 (m, 1F), −177.40 (d, J_H,F=5.3 Hz, 1F).
Example 1.71Preparation of 1-[3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-30(3-fluoro-phenyl)-urea (Compound 33)
• 3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 3-fluorophenylisocyanate, in a similar manner as described in Example 1.68, providing 15 mg (55% yield) of Compound 33: LCMS m/z (%)=359 (M+H, 100).¹H NMR (400 MHz, J acetone-d₆) δ: 8.38 (s, 1H), 8.21 (s, 1H), 7.64 (dd, J₁=9.0 Hz, J₂=2.6 Hz, 1H), 7.59 (d, J=12.0 Hz, 1H), 7.48 (d, J=2.8 Hz, 1H), 7.39 (d, J_H,F=4.8 Hz, 1H), 7.27 (dd, J₁=14.8 Hz, J₂=8.0 Hz, 1H), 7.15 (d, J=9.6 Hz, 1H), 7.12 (s, 1H), 6.72 (dd, J₁=9.6 Hz, J₂=7.2 Hz, 1H), 3.83 (s, 3H), 3.65 (s, 3H).¹⁹F NMR (376 MHz, acetone-d₆) δ: −114.00 (m, 1F), −177.35 (d, J_H,F=3.8 Hz, 1F).
Example 1.72Preparation of 1-(2,4-Difluoro-phenyl)-3-[3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 37)
• 3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 2,4-difluorophenylisocyanate, in a similar manner as described in Example 1.68, providing 21 mg (58% yield) of Compound 37: LCMS m/z (%)=377 (M+H, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.50 (s, 1H), 8.24 (m, 1H), 7.98 (s, 1H), 7.64 (dd, J₁=9.0 Hz, J₂=2.6 Hz, 1H), 7.51 (d, J=2.4 Hz, 1H), 7.38 (d, J_H,F=4.8 Hz, 1H), 7.14 (d, J=8.8 Hz, 1H), 7.06 (ddd, J₁=11.4Hz, J₂=8.6 Hz, J₃=2.8 Hz, 1H), 6.99 (dd, J₁=9.6 Hz, J₂=9.6 Hz, 1H), 3.83 (s, 3H), 3.65 (s, 3H).¹⁹F NMR (376 MHz, acetone-d₆) δ; −119.93 (m, 1F), −127.63 (m, 1F) −177.41 (d, J_H,F=4.1 Hz, 1F).
Example 1.73Preparation of 1-(3-Chloro-phenyl)-3-[3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 83)
• 3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 3-chlorophenylisocyanate, in a similar manner as described in Example 1.68. An additional purification by flash chromatography (SiO₂, Hexanes/EtOAc gradient elution) was necessary, providing a 10 mg (27% yield) of Compound 83: LCMS m/z (%)=377 (M+H³⁷Cl, 25), 375 (M+H³⁵Cl, 100).^{1H NMR (}400 MHz, acetone-d₆) δ: 8.28 (s, 1H), 8.16 (s, 1H), 7.80 (s, 1H), 7.64 (dd, J₁=8.8 Hz, J₂=2.8 Hz, 1H), 7.48 (d, J=2.8 Hz, 1H), 7.38 (d, J_H,F=4.8 Hz, 1H), 7.34 (dd, J₁=9.2 Hz, H₂=0.8 Hz 1H), 7.26 (dd, J₁=8.2, J₂=8.2 Hz, 1H), 7.13 (d, J=8.8 Hz, 1H), 7.00 (dd, J₁=8.8 Hz, J₂=0.8 Hz, 1H), 3.83 (s, 3H), 3.65 (s, 3H).¹⁹F NMR (376 MHz, acetone-d₆) δ: −177.35 (d, J_H,F=4.1 Hz, 1F).
Example 1.74Preparation of 1-(4-Bromo-phenyl)-3-[3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 85)
• 3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 4-bromophenylisocyanate, in a similar manner as described in Example 1.68, providing 27 mg (60% yield) of Compound 85: LCMS m/z (%)=421 (M+H⁸¹Br, 100), 419 (M+H⁷⁹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.24 (s, 1H), 8.13 (s, 1H), 7.63 (dd, J₁=9.0 Hz, J₂=2.6 Hz, 1H), 7.51 (d, J=8.8 Hz, 2H), 7.48 (d, J=2.8 Hz, 1H), 7.42 (d, J=8.8 Hz, 2H), 7.38 (d, J_H,F=4.4 Hz, 1H), 7.13 (d, J=9.2 Hz, 1H), 3.83 (s, 3H), 3.65 (s, 3H).¹⁹F NMR (376 MHz, acetone-d₆) δ: −177.39 (d, J_H,F=5.3 Hz, 1F).
Example 1.75Preparation of 1-[3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-trifluoromethyl-phenyl)-thiourea (Compound 86)
• 3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 4-trifluoromethylphenylthioisocyanate, in a similar manner as described in Example 1.69. An additional purification by flash chromatography (Biotage SiO₂, Hexanes/EtOAc gradient elution) was necessary, providing 38 mg (68% yield) of Compound 86: LCMS m/z (%)=425 (M+H, 100).¹H NMR (400 MHz, acetone-d₆) δ: 9.32 (d, J=20.0 Hz, 2H), 7.83 (d, J=8.4 Hz, 2H), 7.67 (d, J=8.8 Hz, 2H), 7.61 (dd, J₁=8.8 Hz, J₂=2.8 Hz, 1H), 7.45 (d, J=2.4 Hz, 1H), 7.38 (d, J_H,F=4.8 Hz, 1H), 7.20 (d, j=8.8 Hz, 1H), 3.88 (s, 3H), 3.67 (s, 3H).¹⁹F NMR (376 MHz, acetone-d₆) δ: 63.10 (s, 3F), −176.49 (d, J_H,F=4.1 Hz, 1F).
Example 1.76Preparation of 1-(4-Chloro-3-trifluoromethyl-phenyl)-3-13-(4fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 84)
• 3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 4-chloro-3-trifluoromethylphenylisocyanate, in a similar manner as described in Example 1.68, providing 15 mg (29% yield) of Compound 84: LCMS m/z (%)=445 (M+H³⁷Cl, 34), 443 (M+H³⁵Cl, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.69 (s, 1H), 8.39 (s, 1H), 8.15 (d, J=2.4 Hz, 1H), 7.74 (dd, J₁=8.6 Hz, J₂=2.2 Hz 1H), 7.65 (dd, J₁=9.0 Hz, J₂=2.6 Hz, 1H), 7.53 (d, J=8.8 Hz, 1H), 7.49 (d, J=2.4 Hz, 1H), 7.38 (d, J_H,F=4.4 Hz, 1H), 7.14 (d, J=9.2 Hz, 1H) 3.83 (s, 3H), 3.65 (s, 3H).¹⁹F NMR (376 MHz, acetone-d₆) δ: −63.75 (s, 3F), −177.40 (d, J_H,F=5.3 Hz, 1F).
Example 1.77Preparation of 1-13-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-methoxy-phenyl)-urea (Compound 87)
• 3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 4-methoxyphenylisocyanate, in a similar manner as described in Example 1.68. Additionally the residue was washed with CH₂Cl₂, providing 18 mg (29% yield) of Compound 87: LCMS m/z (%)=371 (M+H, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.06 (s, 1H), 7.95 (s, 1H), 7.63 (dd, J=8.8 Hz, J₂=2.8 Hz, 1H), 7.49 (d, J=2.8 Hz, 1H), 7.42 (d, J=8.4 Hz, 2H), 7.37 (d, J_H,F=4.4 Hz, 1H), 7.11 (d, J=9.2 Hz, 1H), 6.85 (d, J=9.2 Hz, 2H), 3.82 (s, 3H), 3.75 (s, 3H), 3.65 (s, 3H).¹⁹F NMR(376 MHz, acetone-d₆) δ: −177.41 (d, J_H,F=4.1 Hz, 1F).
Example 1.78Preparation of 1-(3-Acetyl-phenyl)-3-[3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 88)
• 3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 3-acetylphenylisocyanate, in a similar manner as described in Example 1.68. An additional purification by flash chromatography (SiO₂, Hexanes/EtOAc gradient elution) was necessary, providing 36 mg (53% yield) of Compound 88: LCMS m/z (%)=383 (M+H, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.31 (s, 1H), 8.17 (s, 1H), 8.13 (s, 1H), 7.79 (dd, J₁=9.0 Hz, J₂=2.2 Hz, 1H), 7.63 (d, J₁=15.5 Hz, J₂=8.3 Hz, J₃=2.7 Hz, 1H), 7.50 (d, J=2.4 Hz, 1H), 7.41 (m, 3H), 7.14 (d, J=9.2 Hz, 1H), 3.84 (s, 3H), 3.65 (s, 3H), 2.56 (s, 3H).¹⁹F NMR (376 MHz, acetone-d₆) δ: −177.39 (d, J_H,F=4.1 Hz, 1F).
Example 1.79Preparation of 1-13-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-trifluoromethyl-phenyl)-urea (Compound 89)
• 3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 4-trifluoromethylphenylisocyanate, in a similar manner as described in Example 1.69, providing 24 mg (49% yield) of Compound 89: LCMS m/z (%)=409 (M+H, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.56 (s, 1H), 8.29 (s, 1H), 7.75 (d, J=8.8 Hz, 2H), 7.65 (dd, J₁=9.0 Hz, J₂=2.6 Hz, 1H), 7.60 (d, J=8.4 Hz, 2H), 7.50 (d, J=2.4 Hz, 1H), 7.38 (d, J_H,F=4.4 Hz, 1H), 7.14 (d, J=8.8 Hz, 1H), 3.84 (s, 3H), 3.65 (s, 3H).¹⁹F NMR (376 MHz, acetone-d₆) δ: −62.80 (s, 3F), −177.39 (d,_H,F=4.1 Hz, 1F).
Example 1.80Preparation of 1-13-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-trifluoromethyl-phenyl)-urea (Compound 90)
• 3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine was treated with 3-trifluoromethylphenylisocyanate, in a similar manner as described in Example 1.69, providing 37 mg (48% yield) of Compound 90: LCMS m/z (%)=409 (M+H, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.50 (s, 1H), 8.27 (s, 1H), 8.07 (s, 1H), 7.67 (d, J=8.8 Hz, 1H), 7.64 (d, J=2.4 Hz, 1H), 7.49 (m, 2H), 7.38 (d, J_H,F=4.8 Hz, 1H), 7.30 (d, J=8.0 Hz, 1H), 7.14 (d, J=8.8 Hz, 1H), 3.84 (s, 3H).¹⁹F NMR (376 MHz, acetone-d₆) δ: −63.85 (s, 3F), −177.42 (d, J_H,F=4.1 Hz, 1F).
Example 1.81Preparation of Intermediate 3-(4-Bromo-2-isopropyl-2H-pyrazol-3-yl)4-methoxy-phenylamine
• To a solution of 4-bromo-1-isopropyl-5-(2-methoxy-5-nitro-phenyl)-1H-pyrazole (0.50 g, 1.47 mmol) in ethanol (5.0 mL), was added SnCl₂.2H₂0 (1.3 g, 5.88 mmol) and the mixture was heated at 55° C. overnight. The ethanol was evaporated and the residue was taken up in ethyl acetate (50 mL) and washed with 10% NaOH (10 mL). The organic layer was dried over MgSO₄and evaporated to yield a light yellow solid. The crude material was purified via Biotage silica chromatography (hexane/EtOAc, 3/1) to yield a pale yellow solid of 3-(4-bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.38 g, 85%). LCMS m/z (%)=311 M+H⁺, (⁷⁹Br, 100), (⁸¹Br, 96.5),¹H NMR (400 MHz, CDCl₃) δ: 7.47 (s, 1H), 6.78 (d, J=8.08 Hz, 1H), 6.72 (dd, J₁=8.01 Hz, J₂=2.78 Hz, 1H), 6.54 (d, J=2.78 Hz, 1H), 4.14 (m, 1H), 3.63 (s, 3H), 1.4 (d, J=6.57 Hz, 3H), 1.23 (d, J=6.57 Hz, 3H).
• The intermediate 4-Bromo-1-isopropyl-5-(2-methoxy-5-nitro-phenyl)-1H-pyrazole was prepared in the following manner:
• A. 1-Isopropyl-1H-pyrazole: To a solution of pyrazole (50.0 g, 735.3 mmol) in aqueous sodium hydroxide (123.5 g NaOH/200 mL of water), was added isopropyl bromide (180.0 g, 1470.1 mmol) and the mixture was then heated to reflux for 6-7 days. The reaction mixture was cooled and extracted with ethyl acetate (3×300ml). The combined organic layers were dried over MgSO₄. Removal of the volatiles in vacuo provided a light yellow oil, which was distilled via Kugelrohr at 140° C. and 10 Torr, to provide 1-isopropyl-1H-pyrazole as a colorless oil (43 g, 53%). LCMS m/z (%) =111 M+H⁺, (100).¹H NMR (400 MHz, DMSO-d₆) δ: 7.72 (d, J=2.3 Hz, 1H), 7.41 (t, 1H), 6.21 (t, 1H), 4.5 (q, 1H), 1.41-1.37 (d, J=11.1 Hz).
• B. 2-Isopropyl-2H-pyrazole-3-boronic acid: n-BuLi (17.46 g, 110 mL, 273 mM, in hexanes) was slowly added over 30 minutes at −78° C. to a THF solution of 1-isopropyl-1H-pyrazole (25.0 g, 227 mmol). The reaction mixture was stirred at −78° C. for 2 hours. A solution of cooled triisopropoxy boronate (170.0 g, 909 mmol) was added slowly via canula over 45 minutes. The reaction mixture was allowed to warm to room temperature and stirred overnight. The reaction mixture was adjusted to pH 6-7 with HCl (1M, 170 mL). The solvent was evaporated to dryness and the resulting residue was triturated with 1:1 ethylacetate:dichloromethane, the suspension filtered and the solvent was evaporated in vacuo to yield 2-isopropyl-2H-pyrazole-3-boronic acid as a colorless solid (20.0 g, 58%). LCMS m/z (%)=154 M+H⁺, (100).¹H NMR (400 MHz, DMSO-d₆) δ: 8.14 (s, 2H), 7.2 (s, 1H), 6.5 (s, 1H), 5.05 (m, 1H), 1.2 (d, J=9.0 Hz, 6H).
• C. 1-Isopropyl-5-(2-methoxy-5-nitro-phenyl)-1H-pyrazole: To a mixture of trifluoromethanesulfonic acid 2-methoxy-5-nitro-phenyl ester, (4.1 g, 13.6 mmol; see Example 1.1, Step B for preparation), 2-isopropyl-2H-pyrazole-3-boronic acid (5.2 g, 34.1 mmol), and anhydrous Cs₂CO₃(17.7 g, 54.4 mmol) in DME under argon was added Pd (PPh₃) 4 (0.79 g, 0.68 mmol) and the mixture was heated at 80° C. for 16 h. The reaction mixture was cooled, filtered through Celite and evaporated to dryness. The residue was taken up in ethyl acetate and the solution was washed with water. The organic layer was dried over MgSO₄and evaporated to afford a crude product as a brown solid. The crude material was purified via Biotage silica chromatography (hexane/EtOAc, 3/1) to yield a colorless solid, 1-isopropyl-5-(2-methoxy-5-nitro-phenyl)-1H-pyrazole (1.88 g, 52%). LCMS m/z (%)=261 M+H⁺ (100),¹H NMR (400 MHz, CDCl₃) δ: 8.36 (dd, J₁=9.09 Hz, J₂=2.5 Hz, 1H), 8.18 (d, J=8.18 Hz, 1H), 7.65 (s, 1H), 7.09 (d, J=8.08 Hz, 1H), 6.25 (s, 1H), 4.16 (dd, J₁=13.14 Hz, J₂=6.57 Hz, 1H), 3.95 (s, 3H), 1.45 (d, J=6.82 Hz, 6H).
• D. 4-Bromo-1-isopropyl-5-(2-methoxy-5-nitro-phenyl)-1H-pyrazole: To a stirred, ice-cooled solution of 1-isopropyl-5-(2-methoxy-5-nitro-phenyl)-1H-pyrazole (1.0 g, 3.83 mmol) in DMF (10 mL) was added NBS (0.75 g, 4.22 mmol) slowly over a period of 10 minutes. The reaction mixture was warmed to ambient temperature and stirred for 2 h. The reaction was poured into an ice-water mixture with vigorous stirring to form a white solid, which was filtered and washed with cold water until free of DMF. The solid was dried in vacuo to give colorless solid 4-bromo-1-isopropyl-5-(2-methoxy-5-nitro-phenyl)-1H-pyrazole (1.25 g, 96%). LCMS m/z (%)=340 M+H⁺, (79Br, 100), 342 (⁸¹Br, 96.5).¹H NMR (400 MHz, CDCl₃) δ: 8.4 (dd, J₁=9.09 Hz, J₂=2.78 Hz, 1H), 8.19 (d, J=2.78), 7.6 (s, 1H), 7.14 (d,J=9.35 Hz, 1H), 4.11 (m, 1H), 3.96 (s, 3H), 1.49 (d, J=6.52 Hz, 3H), 1.36 (d, J=6.52 Hz, 3H).
Example 1.82Preparation of Intermediate 3-(4-Chloro-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine
• To a solution of 4-chloro-1-isopropyl-5-(2-methoxy-5-nitro-phenyl)-1H-pyrazole (0.18 g, 0.61 mmol) in ethanol (5.0 mL), was added SnCl₂.2H₂O (0.56 g, 2.44 mmol) and the mixture was heated at 55° C. overnight. The ethanol was evaporated and the residue was taken up in ethyl acetate (50 mL) and washed with 10% NaOH (10 mL). The organic layer was dried over MgSO₄and evaporated to yield a light yellow solid. The crude material was purified via Biotage silica chromatography (hexane/EtOAc, 3/1) to yield a pale yellow solid of 3-(4-chloro-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.116 g, 75%). LCMS m/z (%)=267 M+H⁺, (³⁵Cl, 100), 269 (³⁷Cl, 28.5)),¹H NMR (400 MHz, CDCl₃) δ: 7.47 (s, 1H), 6.78 (d, J=8.08 Hz, 1H), 6.72 (dd, J₁=8.01 Hz, J₂=2.78 Hz, 1H), 6.54 (d, J=2.78 Hz, 1H), 4.14 (m, 1H), 3.63 (s, 3H), 1.4 (d, J=6.57 Hz, 3H), 1.23 (d, J=6.57 Hz, 3H).
• The intermediate 4-chloro-1-isopropyl-5-(2-methoxy-5-nitro-phenyl)-1H-pyrazole was prepared in the following manner:
• To a stirred, ice-cooled solution of 1-isopropyl-5-(2-methoxy-5-nitro-phenyl)-1H-pyrazole from Example 1.81, Step C (1.0 g, 3.83 mmol) in DMF (10 mL) was added NCS (0.56 g, 4.22 mmol) over a period of 10 minutes. The reaction mixture was warmed to ambient temperature and stirred at 55° C. for 6 h. The reaction mixture was cooled and poured into an ice-water mixture with vigorous stirring to form a white solid, which was filtered and washed with cold water until free of DMF. The solid was dried in vacuo to yield 4-chloro-1-isopropyl-5-(2-methoxy-5-nitro-phenyl)-1H-pyrazole (1.1 g, 97%). LCMS m/z (%)=296 M+H⁺, (³⁵Cl, 100), 298 (³⁷Cl, 28.5).¹H NMR (400 MHz, CDCl₃) δ: 8.4 (dd, J₁=9.09Hz, J₂=2.78Hz, 1H), 8.19 (d, J=2.8 Hz), 7.6 (s, 1H), 7.14 (d,J=9.1 Hz, 1H), 4.10 (m, 1H), 3.94 (s, 3H), 1.49 (d, J=6.62 Hz, 3H), 1.36 (d, J=6.62 Hz, 3H).
Example 1.83Preparation of Intermediate 3-(2-Isopropyl-2H-pyrazol-3-yl4-methoxy-phenylamine
• To a solution of 1-isopropyl-5-(2-methoxy-5-nitro-phenyl)-1H-pyrazole, from Example 1.81, Step C (0.57 g, 2.18 mmol) in ethanol (5.0 mL), was added SnCl₂.2H₂O (1.97 g, 8.74 mmol) an mixture was heated at 55° C. overnight. The ethanol was evaporated and the residue was taken in ethyl acetate (50 mL) and washed with 10% NaOH (10 mL). The organic layer was dried over MgSO₄and evaporated to yield a light yellow solid. The crude material was purified via Biotage silica chromatography (hexane/EtOAc, 3/1) to yield a pale yellow solid of 3-(2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.465 g,94%). LCMS m/z (%)=232 M+H⁺ (100),¹H NMR (400 MHz, CDCl₃) δ: 7.47 (s, 1H), 6.78 (d, J=8.08 Hz, 1H), 6.72 (dd, J₁=8.01 Hz, J₂=2.78 Hz, 1H), 6.54 (d, J=2.78 Hz, 1H),6.25 (s, 1H), 4.14 (m, 1H),3.63 (s,3H), 1.4 (d, J=6.57 Hz, 3H), 1.23 (d, J=6.57 Hz, 3H).
Example 1.84Preparation of 1-(4-Chloro-phenyl)3-[3-(2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 43)
• To a solution of 3-(2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.1 g, 0.433 mmol) in CH₂Cl₂, was added 4-chlorophenyl isocyanate (0.0733 g, 0.476 mmol) and stirred overnight. The resulting precipitate was filtered and washed with methylene chloride/hexane (1:1), and dried in vacuo to yield Compound 43 as a colorless solid (0.050 g, 30%). LCMS m/z (%)=386 M+H⁺ (³⁷Cl, 26), 385 M+H⁺ (³⁵Cl, 94),¹H NMR (400 MHz, DMSO-d₆) δ: 8.84 (bs, 1H), 8.77 (bs, 1H), 7.48 (d, J=1.91 Hz, 1H), 7.46 (d, J=1.84 Hz, 1H), 7.44 (d, J=3.65 Hz, 1H), 7.33 (t, 1H), 7.3 (s, 1H), 7.29 (d, J=7.68 Hz, 2H), 7.07 (d, J=8.9 Hz, 2H), 6.13 (d, J=1.83 Hz, 1H), 4.25 (m, 1H), 3.7 (s, 3H), 1.3 (d, J=6.76 Hz, 6H).
Example 1.85Preparation of 1-(4-Fluoro-phenyl)-3-[3-(2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 44)
• To a solution of 3-(2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.1 g, 0.433 mmol) in CH₂Cl₂, was added 4-fluoro phenyl isocyanate (0.0652 g, 0.476 mmol) and stirred overnight. The resulting precipitate was filtered and washed with methylene chloride/hexane (1:1), and dried in vacuo to yield Compound 44 as a colorless solid (0.050 g, 30%). LCMS m/z (%)=369 M+H⁺, (100),¹H NMR (400 MHz, DMSO-d₆) δ: 8.59 (bs, 1H), 8.52 (bs, 1H), 7.42-7.35 (m, 4H), 7.28-7.27(d, J=2.7 Hz, 1H), 7.057(m, 3H), 6.07 (d, J=1.76 Hz, 1H), 4.10 (m, 1H), 3.66 (s, 3H), 1.24 (d, J=6.56 Hz, 6H).
Example 1.86Preparation of 1-(3,4-Difluoro-phenyl)-3-[3-(2-isopropyl-2H-pyrazol-3-yl)-4 -methoxy-phenyl]-urea (Compound 46)
• To a solution of 3-(2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.1 g, 0.433 mmol) in CH₂Cl₂, was added 3,4-difluoro phenyl isocyanate (0.067 g, 0.476 mmol) and stirred overnight. The resulting precipitate was filtered and washed with methylene chloride/hexane (1:1), and dried in vacuo to yield Compound 46 as a colorless solid (0.078 g,42%). LCMS m/z (%)=387 M+H⁺, (100),¹H NMR (400 MHz, acetone-d₆) δ: 8.45 (bs, 1H), 8.27 (bs, 1H), 7.65-7.59 (m, 3H), 7.485(d, J=2.56 H), 1H), 7.228-7.009 (m, 4H), 6.245 (d, J=1.73 Hz, 1H), 4.36 (m, 1H), 3.82 (s, 3H), 1.418 (d, J=6.61 Hz, 6H).
Example 1.87Preparation of 1-(3-Chloro-4-fluoro-phenyl)-3-[3-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 47)
• To a solution of 3-(2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.1 g,0.433 mmol) in CH2Cl2, was added 3-chloro-4-fluoro phenyl isocyanate (0.075 g, 0.476 mmol) and stirred overnight. The resulting precipitate was filtered and washed with methylene chloride/hexane (1:1), and dried in vacuo to yield Compound 47 as a colorless solid (0.090 g, 52%). LCMS m/z (%)=405 M+H+ (³⁷Cl, 23) 403 M+H+ (³⁵Cl, 60),¹H NMR (400 MHz, acetone-d₆) δ: 8.3 (bs, 1H), 8.1 (bs, 1H), 7.82-7.796 (dd, J₁=6.75 Hz, J₂=2.58 Hz, 1H), 7.536 (d, J=2.67 Hz, 2H), 7.514 (d, J=2.67 Hz, 2H), 7.43 (d, J=1.57 Hz,1H), 7.368 (d, J=2.65 Hz, 1H), 7.299 (d, J=1.23 Hz, 1H), 7.136 (t, 1H), 6.079 (d, J=1.69 Hz, 1H), 4.224 (m, 1H), 3.73 (s, 3H), 1.308 (d, J=6.61 Hz, 6H).
Example 1.88Preparation of 1-(2-Chloro-4-trifluoromethyl-phenyl)-3-[3-(2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 48)
• To a solution of 3-(2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.1 g, 0.433 mmol) in CH₂Cl₂, was added 2-Chloro-4-trifluoromethylphenyl isocyanate (0.106 g, 0.476 mmol) and stirred overnight. The resulting precipitate was filtered and washed with methylene chloride/hexane (1:1), and dried in vacuo to yield Compound 48 as a colorless solid (0.109 g, 56%). LCMS m/z (%)=455 M+H+ (³⁷Cl, 35),453 M+H+ (³⁵Cl, 100),¹H NMR (400 MHz, acetone-d₆) δ: 8.78 (bs, 1H), 8.48 (d, J=8.97 Hz, 1H), 7.99 (bs, 1H), 7.615 (s, 1H), 7.52-7.46(m, 1H), 7.375 (d, J=1.41 Hz, 1H), 7.337 (d,J=2.64 Hz, 1H), 6.973 (d, J=8.92 Hz, 1H), 6.027 (d, J=1.63 Hz, 1H), 4.151 (m, 1H), 3.676 (s, 3H), 1.244 (d, J=6.61 Hz, 6H).
Example 1.89Preparation of 1-[3-(4-Bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4Chloro-phenyl)-urea (Compound 49)
• To a solution of 3-(4-bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.08 g, 0.258 mmol) in CH₂Cl₂, was added 4-chloro phenyl isocyanate (0.041 g, 0.263 mmol) and stirred overnight. The resulting precipitate was filtered and washed with methylene chloride/hexane (1:1), and dried in vacuo to yield Compound 49 as a colorless solid (0.052 g, 42%). LCMS m/z (%)=463 (M+H+⁷⁹Br, 35Cl, 41), 465 M+H+ (⁸¹Br³⁵Cl 88), 467 H+ (81 Br 37Cl, 21),¹H NMR (400 MHz, acetone-d₆) δ: 8.30 (bs, 1H), 8.24 (bs, 1H), 7.685 (d, J=2.66 Hz, 1H), 7.577 (d, J=1.92 Hz, 2H), 7.74 (d, J=2.65, 1H), 7.292 (d, J=1.9 Hz, 2H), 7.280 (d, J=1.6 Hz, 1H), 7.135 (d, J=9.01 Hz, 1H), 4.256 (m, 1H), 3.811 (s, 3H), 1.447 (d, J=6.61 Hz, 3H), 1.288 (d, J=6.61 Hz, 3H).
Example 1.90Preparation of 1-[3-(4-Bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-fluoro-phenyl)-urea (Compound 50)
• To a solution of 3-(4-bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.08 g, 0.258 mmol) in CH₂Cl₂, was added 4-fluoro phenyl isocyanate (0.036 g, 0.263 mmol) and stirred overnight. The resulting precipitate was filtered and washed with methylene chloride/hexane (1:1), and dried in vacuo to yieldCompound 50 as a colorless solid (0.037 g, 32%). LCMS m/z (%)=449 M+H+ (⁸¹Br, 58), 447 M+H+ (79 Br, 63),¹H NMR (400 MHz, CDCl₃) δ: 7.5 (s, 1H), 7.346 (d, 1.95 Hz, 2H), 7.326 9bs, 1H), 7.151 (d, J=4.77 Hz, 1H), 7.124 (t, 1H), 6.995 (d, J=1.87 Hz, 2H), 6.869 (d, J=5.42 Hz, 1H), 6.847 (d, J=4.71 Hz, 1H), 4.045 (m, 1H),3.651 (s,3H), 1.333 (d, J=6.61 Hz, 3H), 1.160 (d, J=6.61 Hz, 3H).
Example 1.91Preparation of 1-[3-(4-Bromo-2-isopropyl-2H-pyrazol-3-yl)-4methoxy-phenyl]-3-(3,4-difluoro-phenyl)-urea (Compound 51)
• To a solution of 3-(4-bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.08 g, 0.258 mmol) in CH₂Cl₂, was added 3,4-difluoro phenyl isocyanate (0.041 g, 0.263 mmol) and stirred overnight. The resulting precipitate was filtered and washed with methylene chloride/hexane (1:1), and dried in vacuo to yield Compound 51 as a colorless solid (0.096 g, 80%). LCMS m/z (%)=467 M+H+ (⁸¹Br, 88), 465, M+H+ (⁷⁹Br, 95),¹H NMR (400 MHz, DMSO-d₆) δ: 8.816 (bs, 1H), 8.681 (bs, 1H), 7.5 (s, 1H), 7.412 (d, J=2.51 Hz, 2H), 7.389 (d, J=2.51 Hz, 2H), 7.199 (t, 1H), 7.167 (s, 1H), 6.983 (t, 1H), 3.989 (m, 1H), 3.596 (s, 3H), 1.225 (d, J=6.61 Hz, 3H), 1.078 (d, J=6.61 Hz, 3H).
Example 1.92Preparation of 1-[3-(4-Bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-Chloro-4-fluoro-phenyl)-urea (Compound 52)
• To a solution of 3-(4-bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.08 g, 0.258 mmol) in CH₂Cl₂, was added 3-chloro-4-fluoro phenyl isocyanate (0.045 g, 0.263 mmol) and stirred overnight. The resulting precipitate was filtered and washed with methylene chloride/hexane (1:1), and dried in vacuo to yield Compound 52 as a colorless solid (0.067 g, 54%). LCMS m/z (%)=485 M+H⁺ (⁸¹Br³⁷Cl, 30), 483 M+H+ (⁸¹Br³⁵Cl, 100), 481 M+H⁺ (⁷⁹Br,³³⁵Cl, 72),¹H NMR (400 MHz, CDCl₃) δ: 7.7 (s, 1H), 7.4 (d, J=1.8 Hz, 1H), 7.3 (d, J=1.8 Hz, 1H), 7.25 (s, 1H), 7.1-6.8 (m, 3H), 4.2 (m, 1H), 3.8 (s, 3H), 1.5 (d, J=6.61 Hz, 3H), 1.3 (d, J=6.61 Hz, 3H).
Example 1.93Preparation of 1-[3-(4-Bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2Chloro-4-trifluoromethyl-phenyl)-urea (Compound 53)
• To a solution of 3-(4-bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.08 g, 0.258 mmol) in CH₂Cl₂, was added 3-chloro-4-trifluoromethyl-phenyl isocyanate (0.059 g, 0.263 mmol) and stirred overnight at ambient temperature. The resulting precipitate was filtered and washed with methylene chloride/hexane (1:1), and dried in vacuo to yield Compound 53 as a colorless solid (0.1 g, 73%). LCMS m/z (%)=535 M+H⁺ (⁸¹Br 37 Cl, 39), 533 M+H⁺ (⁸¹Br 35Cl, 100), 531 M+H⁺ (⁷⁹Br³⁵Cl, 63),¹H NMR (400 MHz, DMSO-d₆) δ: 8.582 (bs, 1H), 8.456 (bs, 1H), 7.864 (s, 1H), 7.654 (d, J=8.28 Hz, 1H), 7.557 (d, J=2.76 Hz, 1H), 7.536 (d, J=2.76 Hz, 1H), 7.369 (d, J=9.13 Hz, 1H), 4.133 (m, 1H), 3.752 (s, 3H), 1.375 (d, J=6.61 Hz, 3H), 1.217 (d, J=6.61 Hz, 3H).
Example 1.94Preparation of 1-[3-(4-Chloro-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-Chloro-phenyl)-urea (Compound 45)
• To a solution of 3-(4-chloro-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.1 g, 0.433 mmol) in CH₂Cl₂, was added 4-chloro-phenyl isocyanate (0.073g, 0.476 mmol) and stirred overnight. The resulting precipitate was filtered and washed with methylene chloride/hexane (1:1), and dried in vacuo to yield Compound 45 as a colorless solid (0.097 g, 54%). LCMS m/z (%)=421 M+H⁺ (³⁷Cl, 53), 419 M+H⁺ (³⁵Cl, 77)¹H NMR (400 MHz, CDCl₃) δ: 7.689 (bs, 2H), 7.460 (d, J=2.62 Hz, 1H), 7.438 (d, J=2.52 Hz, 1H), 7.22-7.28 (m, 3H), 6.947 (d, J=8.93 Hz, 1H), 4.245 (m, 1H), 3.808 (s, 3H), 1.575 (d, J=6.35 Hz, 3H), 1.381 (d, J=6.35 Hz, 3H).
Example 1.95Preparation of 1-[3-(4-Chloro-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-fluoro-phenyl)-urea (Compound 54)
• To a solution of 3-(4-chloro-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.1 g, 0.433 mmol) in CH₂Cl₂, was added 4-fluoro-phenyl isocyanate (0.065 g, 0.476 mmol) and stirred overnight. The resulting precipitate was filtered and washed with methylene chloride/hexane (1:1), and dried in vacuo to yield Compound 54 as a colorless solid (0.055 g, 33%). LCMS m/z (%)=405 M+H+(³⁷Cl, 20), 404 M+H+ (³⁵Cl, 50),¹H NMR (400 MHz, acetone-d₆) δ: 8.62 (bs, 1H), 8.101 (s, 1H), 8.081 (d, J=2.3 Hz, 2H), 7.967 (t, 1H), 7.885 (d, J=2.21 Hz, 2H), 7.558 (d, J=8.91 Hz, 1H), 7.473 (t, 1H), 4.67 (m, 1H), 4.238 (s, 3H), 1.873(d, J=6.61 Hz, 3H), 1.713 (d, J=6.61 Hz, 3H), 1.713 (d, J=6.61 Hz, 3H).
Example 1.96Preparation of 1-[3-(4-Chloro-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3,4-difluoro-phenyl)-urea (Compound 55)
• To a solution of 3-(4-chloro-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.1 g, 0.433 mmol) in CH₂Cl₂, was added 3,4-difluoro-phenyl isocyanate (0.075 g, 0.476 mmol) and stirred overnight. The resulting precipitate was filtered and washed with methylene chloride/hexane (1:1), and dried in vacuo to yield Compound 55 as a colorless solid (0.062 g, 35%). LCMS m/z (%)=423 M+H+ (³⁷Cl, 23), 421 M+H+ (³⁵Cl, 67),¹H NMR (400 MHz, acetone-d₆) δ: 8.199 (d, J=2.44 Hz, 1H), 8.181 (d, J=2.42 Hz, 1H), 8.166 (d, J=2.37 Hz, 1H), 8.147 (d, J=2.08 Hz, 1H), 8.106 (d, J=2.65 Hz, 1H), 8.085 (d, J=2.68 Hz, 1H), 7.967 (s, 1H), 7.880 (d, J=2.61 Hz, 1H), 7.627 (t, 1H), 7.594 (d, J=3.86 Hz, 1H) 7.563 (d, J=8.96 Hz, 1H), 4.669 (m, 1H), 4.242 (s, 3H), 1.874 (d, J=6.61 Hz, 3H), 1.713 (d, J=6.61 Hz, 3H).
Example 1.97Preparation of 1-(3-Chloro-4-fluoro-phenyl)-3-13-(4-Chloro-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 56)
• To a solution of 3-(4-chloro-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.1 g, 0.433 mmol) in CH₂Cl₂, was added 3-chloro-4-fluoro-phenyl isocyanate (0.082 g, 0.476 mmol) and stirred overnight. The resulting precipitate was filtered and washed with methylene chloride/hexane (1:1), and dried in vacuo to yield Compound 56 as a colorless solid (0.052 g, 28%). LCMS m/z (%)=439 M+H+ (³⁷Cl, 29), 437 M+H+ (³⁵Cl, 46),¹H NMR (400 MHz, acetone-d₆) δ: 8.764 (bs, 1H), 8.673 (bs, 1H), 8.31-8.28 (m, 1H), 8.110 (d, J=2.72 Hz, 1H), 8.088 (d, J=2.71 Hz, 1H), 7.974 (s, 1H), 7.878 (d, J=2.68 Hz, 1H), 7.828-7.788 (m, 1H), 7.68-7.64 (m, 1H), 7.635-7.563 (m, 1H), 4.668 (m, 1H), 4.246 (s, 3H), 1.874 (d, J=6.61 Hz, 3H), 1.713 (d, J=6.61 Hz, 3H).
Example 1.98Preparation of 1-[3-(4-Chloro-2-isopropyl-2 H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2-Chloro-4-trifluoromethyl-phenyl)-urea (Compound 57)
• To a solution of 3-(4-chloro-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.1 g, 0.433 mmol) in CH₂Cl₂, was added 2-chloro-4-trifluoromethyl-phenyl isocyanate (0.107 g, 0.476 mmol) and stirred overnight. The resulting precipitate was filtered and washed with methylene chloride/hexane (1:1), and dried in vacuo to yield Compound 57 as a colorless solid (0.085 g, 40%). LCMS m/z (%)=489 M+H+ (³⁷Cl, 25), 488 M+H+ (³⁵Cl³⁷Cl, 25), 487 M+H+ (³⁵Cl, 100),¹H NMR (400 MHz, acetone-d₆) δ: 8.88 (bs, 1H), 8.544 (bs, 1H), 8.063 (s, 1H), 7.669 (d, J=1.54 Hz, 1H), 7.606 (d, J=2.69 Hz, 1H), 7.58 (t, 1H), 7.549 (d, J=1.51 Hz, 1H), 7.385 (d, J=2.68 Hz, 1H), 7.68-7.64 (m, 1H), 7.080 (d, J=8.98 Hz, 1H), 4.145 (m, 1H), 3.742 (s, 3H), 1.345 (d, J=6.61 Hz, 3H), 1.188 (d, J=6.61 Hz, 3H).
Example 1.99Preparation of Intermediate 3-(4-Bromo-2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine
• To a stirred solution of 4-bromo-5-(2-methoxy-5-nitro-phenyl)-1-methyl-3-trifluoromethyl-1H-pyrazole (0.08 g, 0.20 mmol) in EtOH (0.7 mL) was added SnCl₂2H₂O (0.18 g, 0.80 mmol, 4.0 eq.) and the mixture was stirred at reflux for 2 hours followed by the removal of EtOH under vacuum. The resulting solid was dissolved in EtOAc and 1N NaOH was added until the pH was adjusted to 6. The mixture was stirred overnight and filtered through celite. The aqueous phase was extracted with EtOAc (3×50 mL). The combined organic phase was dried over anhydrous MgSO₄, filtered and evaporated to give 3-(4-bromo-2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.06 g, 0.17 mmol, 99% yield after two steps) as a white solid: LCMS m/z (%)=350 (M+H⁷⁹Br, 95), 352 (M+H⁸¹Br, 100).¹H NMR (400 MHz, CDCl₃) δ: 6.78 (dd, J=14.0, 6.0 Hz, 1H), 6.76 (dd, J=8.0, 4.0 Hz, 1H), 6.54 (d, J=4.0 Hz, 1H), 3.67 (s, 3H), 3.66 (s, 3H) 3.36 ( broad s, 2H).
• The intermediate 4-bromo-5-(2-methoxy-5-nitro-phenyl)-1-methyl-3-trifluoromethyl-1H-pyrazole was prepared in the following manner:
• A. 2-Methyl-5-trifluoromethyl-2H-pyrazole-3-boronic acid: 1-methyl-3-trifluromethyl-1H-pyrazole (1.00 g, 6.66 mmol) was dissolved in THF (25 mL) in an oven-dried round bottom flask and cooled to −78° C. in an acetone/dry ice bath. 2.5 M n-butyl lithium/hexane (3.196 mL, 7.99 mmol) was added drop wise to the stirred solution followed by drop wise addition of triisopropyl borate (5.01 g, 26.64 mmol). The mixture was warmed to room temperature and stirred for three hours. The reaction mixture was adjusted to pH 6 with 1N HCl solution followed by the removal of THF under vacuum. The aqueous phase was extracted with EtOAc (3×100 mL). The combined organic phase was washed with brine and dried over anhydrous MgSO₄, filtered and evaporated to give 2-methyl-5-trifluoromethyl-2H-pyrazole-3-boronic acid (1.12 g, 5.80 mmol, 87% yield) as a white solid: LCMS m/z (%)=195 (M+H, 100).¹H NMR (400 MHz, DMSO-d₆) δ: 8.37-8.40 (m, 2H), 7.57 (dd, J=4.0 Hz, 1H), 4.06 (s, 3H).
• B. 5-(2-Methoxy-5-nitro-phenyl)-1-methyl-3-trifluoromethyl-1H-pyrazole: Trifluoro-methanesulfonic acid 2-methoxy-5-nitro-phenyl ester (0.10 g, 0.34 mmol), 2-methyl-5-trifluoromethyl-2H-pyrazole-3-boronic acid (0.10 g, 0.52 mmol, 1.5 eq.) and Na₂CO₃(0.04 g, 0.41 mmol, dissolved in a mixture of DME (6 mL) and H₂O (0.6 mL) in an argon flushed round bottom flask. The mixture was degassed with argon for 5 minutes, followed by the addition of Pd(PPh₃)₄(0.04 g, 0.03 mmol, 0.01 eq.). The reaction mixture was degassed under argon for another 5 minutes and stirred at 70° C. overnight. Once the reaction was complete, the DME was removed under vacuum and the crude reaction mixture was purified by SiO₂column chromatography (Eluent: EtOAc/Hexane=5% to 30%). Final purification was achieved via reverse phase C-18 HPLC to afford 5-(2-methoxy-5-nitro-phenyl)-1-methyl-3-trifluoromethyl-1H-pyrazole (0.05 g, 0.17 mmol, 49% yield): LCMS m/z (%)=302 (M+H, 100).¹H NMR (400 MHz, CDCl₃) δ: 8.38 (dd, J=10.0, 2.0 Hz, 1H), 8.19 (d, J=4.0 Hz, 1H), 7.12 (d, J=8.0 Hz, 1H), 6.57 (s, 1H), 3.98 (s, 3H), 3.78 (s, 3H).
• C. 4-Bromo-5-(2-methoxy-5-nitro-phenyl)-1-methyl-3-trifluoromethyl-1H-pyrazole: NBS (0.03 g, 0.18 mmol, 1.1 eq.) in DMF (⅓ mL) was added drop wise to a stirred solution at 0° C. of 5-(2-methoxy-5-nitro-phenyl)-1-methyl-3-trifluoromethyl-1H-pyrazole (0.05 g, 0.17 mmol) in DMF (⅔ mL). The reaction mixture was stirred at 0° C. for 4 hrs and TLC indicated no product. An additional equivalent of NBS was added and the reaction mixture was stirred at 70° C. overnight. A second and third equivalent of NBS was added the following day which resulted in completion of the reaction. The DMF was removed under vacuum and the crude mixture was diluted with EtOAc (50 mL), washed with brine (3×10 mL). The EtOAc phase was dried over anhydrous MgSO₄, filtered and evaporated to give the partially purified product 4-bromo-5-(2-methoxy-5-nitro-phenyl)-1-methyl-3-trifluoromethyl-1H-pyrazole (0.08 g) as a light yellow solid: LCMS m/z (%)=380 (M+H⁷⁹Br, 80), 382 (M+H⁸¹Br, 100).¹H NMR (400 MHz, CDCl₃) δ: 8.44 (dd, J=8.0, 4.0 Hz, 1H), 8.22 (d, 1H), 7.15 (d, J=8.0 Hz, 1H), 3.98 (s, 31H), 3.78 (s, 3H).
Example 1.100Preparation of Intermediate 3-(4-Chloro-2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine
• To a stirred solution of 4-chloro-5-(2-methoxy-5-nitro-phenyl)-1-methyl-3-trifluoromethyl-1H-pyrazole (0.11 g, 0.33 mmol) in EtOH (1.0 mL) was added SnCl₂2H₂O (0.30 g, 1.31 mmol, 4.0 the mixture was stirred at reflux for 2 hours followed by the removal of EtOH under vacuum. The resulting solid was dissolved in EtOAc and IN NaOH was added until the pH was adjusted to 6. The mixture was stirred overnight and filtered through celite. The aqueous phase was extracted with EtOAc (3×50 mL). The combined organic phase was dried over anhydrous MgSO₄, filtered and evaporated to give 3-(4-chloro-2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.067 g, 0.22 mmol, 66% yield after two steps) as a white solid: LCMS m/z (%)=306 (M+H³⁵Cl, 100), 308 (M+H³⁷Cl, 33).¹H NMR (400 MHz, CDCl₃) δ: 6.86 (dd, J=14.0, 6.0 Hz, 1H), 6.84 (dd, J=8.0, 4.0 Hz, 1H), 6.63 (d, J=4.0 Hz, 1H), 3.74 (s, 3H), 3.72 (s, 3H).
• The intermediate 4-chloro-5-(2-methoxy-5-nitro-phenyl)-1-methyl-3-trifluoromethyl-1H-pyrazole was prepared in the following manner:
• NCS (0.05 g, 0.37 mmol, 1.1 eq.) dissolved in DMF (⅔ mL) was added drop wise to a stirred solution of 5-(2-methoxy-5-nitro-phenyl)-1-methyl-3-trifluoromethyl-1H-pyrazole, see Example 1.99 (0.1 g, 0.33 mmol) in DMF (1⅓ mL) at 0° C. The reaction mixture was stirred 0° C. and TLC indicated no product. An additional equivalent of NCS was added and the reaction mixture was stirred at 80° C. overnight which resulted in completion of the reaction. The DMF was removed under vacuum and the crude mixture was diluted with EtOAc (50 mL) and washed with brine (3×10 mL). The EtOAc phase was dried over anhydrous MgSO₄, filtered and evaporated to give the partially purified product 4-chloro-5-(2-methoxy-5-nitro-phenyl)-1-methyl-3-trifluoromethyl-1H-pyrazole (0.13 g) as a light yellow solid: LCMS m/z (%)=336 (M+H³⁵Cl, 100), 382 (M+H³⁷Cl, 33).¹H NMR (400 MHz, CDCl₃) δ: 8.37 (dd, J=8.0, 4.0 Hz, 1H), 8.16 (d, J=4.0 Hz 1H), 7.09 (d, J=8.0 Hz, 1H), 3.92 (s, 3H), 3.69 (s, 3H).
Example 1.101Preparation of Intermediate 4-Methoxy-3-(2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-phenylamine
• SnCl₂.2H₂O (0.15 g, 0.66 mmol, 4.0 eq.) was added to a stirred solution of 5-(2-methoxy-5-nitro-phenyl)-1-methyl-3-trifluoromethyl-1H-pyrazole, see Example 1.99, (0.05 g, 0.16 mmol) in EtOH (2.0 mL). The mixture was stirred at reflux for 4 hrs and EtOH was removed under vacuum. The resulting solid was dissolved in EtOAc and 1N NaOH was added until the pH was adjusted to 6. The mixture was stirred overnight and filtered through celite. The aqueous phase was extracted with EtOAc (3×50 mL). The combined organic phase was dried over anhydrous MgSO₄, filtered and evaporated to give 4-methoxy-3-(2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-phenylamine (0.04 g, 0.15 mmol, 97% yield): LCMS m/z (%)=272 (M+H, 100).¹H NMR (400 MHz, CDCl₃) δ: 6.82 (dd, J=16.0, 4.0 Hz, 1H), 6.79 (dd, J=10.0, 2.0 Hz, 1H), 6.61 (d, 1H), 6.46 (s, 1H), 3.76 (s, 3H), 3.74 (s, 3H).
Example 1.1021-3-(4-Bromo-2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-chloro-phenyl)-urea (Compound 38)
• Urea synthesis for Compound 38 (general procedure for Examples 1.103-1.106): To a stirred solution of aniline 3-(4-bromo-2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.03 g, 0.08 mmol) in CH₂Cl₂(1 mL) was added 4-chlorophenyl isocyanate (0.01 g, 0.08 mmol, 1.0 eq.) at room temperature. White solid precipitated and was filtered and washed with cold CH₂Cl₂to afford Compound 38 (0.02 g, 0.04 mmol, 50% yield) as a white solid: LCMS m/z (%)=503 (M+H⁷⁹Br, 67), 505 (M+H⁸¹Br, 100).¹H NMR (400 MHz, MeOH-d₄) δ: 7.59 (dd, J=6.0, 2.0 Hz, 1H), 7.42 (d, J=8.0 Hz, 2H), 7.38 (d, J=4.0 Hz, 1H), 7.27 (d, J=8.0 Hz, 2H), 7.16 (d, J=8.0 Hz, 1H), 3.84 (s, 3H), 3.75 (s, 3H).
Example 1.1031-[3-(4-Bromo-2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-fluoro-phenyl)urea (Compound 39)
• 3-(4-Bromo-2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.03 g, 0.08 mmol) was treated with 4-fluorophenyl isocyanate (0.01 g, 8.99 μL, 0.08 mmol, 1.1 equiv.) in CH₂Cl₂(2.0 mL), in a similar manner as described in Example 1.102, to afford Compound 39 (0.03 g, 0.05 mmol, 64% yield) as a white solid: LCMS m/z (%)=487 (M+H⁷⁹Br, 100), 489 (M+H⁸¹Br, 93).¹H NMR (400 MHz, MeOH-d₄) δ: 7.58 (dd, J=10.0, 2.0 Hz, 1H), 7.42 (dd, J=4.0 Hz, 2H), 7.38 (dd, J=10.0, 2.0 Hz, 1H), 7.16 (d, J=12.0 Hz, 1H), 7.03 (dd, J=12.0, 8.0 Hz, 2H), 3.84 (s, 3H), 3.75 (s, 3H).
Example 1.1041-[3-(4-Chloro-2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)4-methoxy-phenyl]-3-(4-fluoro-phenyl)-urea (Compound 40)
• 3-(4-Chloro-2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.03 g, 0.11 mmol) was treated with 4-fluorophenyl isocyanate (0.02 g, 14.6 μL, 0.13 mmol, 1.2 equiv.) in CH₂Cl₂(4.0 mL), in a similar manner as described in Example 1.102. The product was further purified via reverse phase C-18 HPLC to afford Compound 40 (0.03 g, 0.07 mmol, 63% yield) as a white solid: LCMS m/z (%)=443 (M+H³⁷Cl, 100), 445 (M+H³⁵Cl, 36).¹H NMR (400 MHz, MeOH-d₄) δ: 7.58 (dd, J=10.0, 2.0 Hz, 1H), 7.42 (dd, J=4.0 Hz, 2H), 7.40 (dd, J=8.0, 4.0 Hz, 1H), 7.16 (d, J=8.0 Hz, 1H), 7.03 (dd, J=10.0, 6.0 Hz, 2H), 3.84 (s, 3H), 3.74 (s, 3H).
Example 1.1051-3-(4-Chloro-2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)4-methoxy-phenyl]-3-(4-chloro-phenyl)-urea (Compound 41)
• 3-(4-Chloro-2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (0.03 g, 0.11 mmol) was treated with 4-chlorophenyl isocyanate (0.02 g, 0.13 mmol, 1.2 equiv.) in CH₂Cl₂(4.0 mL), in a similar manner as described in Example 1.102. The product was further purified via reverse phase C-18 HPLC to afford Compound 41 (0.03 g, 0.06 mmol, 56% yield) as a white solid: LCMS m/z (%)=459 (M+H³⁵Cl, 100), 461 (M+H³⁵Cl³⁷Cl, 84), 463 (M+H³⁷Cl, 10).¹H NMR (400 MHz, MeOH-d₄) δ: 7.59 (dd, J=8.0, 4.0 Hz, 1H), 7.41 (dd, J=8.0, 8.0 Hz, 2H), 7.40 (dd, J=8.0, 1H), 7.27 (d, J=8.0 Hz, 2H), 7.17 (d, J=12.0 Hz, 1H), 3.84 (s, 3H), 3.74 (s, 3H).
Example 1.1061-(4-Chloro-phenyl)-3-[4-methoxy-3-(2-methyl-5-trifluoromethyl-2 H-pyrazol-3yl)-phenyl]-urea (Compound 42)
• 4-Methoxy-3-(2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-phenylamine (0.02 g, 0.08 mmol) was treated with 4-chlorophenyl isocyanate (0.01 g, 10.45 μL, 0.093 mmol, 1.2 equiv.) in CH₂Cl₂(3.0 mL), in a similar manner as described in Example 1.102. The product was further purified via reverse phase C-18 HPLC to afford Compound 42 (0.03 g, 0.07 mmol, 88% yield) as a white solid: LCMS m/z (%)=425 (M+H³⁷Cl, 100), 427 (M+H³⁵Cl, 34).¹H NMR (400 MHz, MeOH-d₄) δ: 7.50 (dd, J=10.0, 2.0 Hz, 1H), 7.42 (dd, J=8.0 Hz, 3H), 7.27 (dd, J=6.0, 2.0 Hz, 2H), 7.12 (d, J=8.0 Hz, 1H), 3.84 (s, 3H), 3.76 (s, 3H).
Example 1.107Preparation of intermediate 1-(4-chloro-phenyl}3-(4-oxo-4H-chromen-6-yl)-urea
• Step 1: Preparation of 6-amino-chromen-4-one.
• To a solution of 6-nitrochromone (2.0 g, 10.5 mmol) in Methanol/Ethyl acetate (100 mL/20 mL) purged with argon, was added 5% Pd/C (Degussa-wet, 0.5 g) catalyst. Hydrogen gas was bubbled through the slurry with stirring until (2 hrs.) LCMS and TLC showed no starting material. The spent palladium catalyst was filtered off through a celite, and the solid was washed with methanol. The combined filtrate and washings were evaporated to produce 6-amino-chromen-4-one as a light yellow solid (1.58 g, 94%). LCMS m/z (%)=162 (M+H, 100),¹H NMR (400 MHz, CDCl₃) δ: 7.79-7.81 (d, J=5.96 Hz, 1H), 7.38 (d, J=2.86 Hz, 1H), 7.29-7.31 (d, J=8.88 Hz, 1H), 7.01-7.04 (dd, J=8.80, 2.8 Hz, 1H), 6.26-6.28 (d, J=5.96 Hz, 1H), 5.299 (s, 2H).
• Step 2: Preparation of 1-(4-chloro-phenyl)-3-(4-oxo-4H-chromen-6-yl)-urea.
• To the slurry of 6-aminochromone (3.0 g, 18.6 mmol) stirred and heated to 80° C. in toluene (200 mL) was added 4-chlorophenyl isocyanate (3.2 g, 20.5 mmol) and the mixture was refluxed for 18 hrs. The reaction mixture was cooled and the precipitate was filtered and washed with methanol. The residue was dried in vacuo to afford a yellow powder (5.8 g, 99%) of 1-(4-chloro-phenyl)-3-(4-oxo-4H-chromen-6-yl)-urea. LCMS m/z (%)=315 (M+H,³⁵Cl 100), 317 (M+H,³⁷Cl 32.2)¹H NMR (400 MHz, DMSO-d₆) δ: 9.098 (bs, 1H), 8.94 (bs, 1H), 8.28-8.30 (d, J=5.99 Hz, 1H), 8.20-8.21 (d, J=2.69 Hz, 1H), 7.81-7.84 (dd, J=9.0, 2.75 Hz, 1H), 7.62-7.64 (d, J=9.07 Hz, 1H), 7.52-7.55 (dd, J=6.84, 2.16 Hz, 2H), 7.35-7.37 (dd, J=6.85, 2.11 Hz, 2H), 6.33-6.34 (d, J=5.98 Hz, 1H).
Example 1.108Preparation of 1-(4-Chloro-phenyl)-3-14-hydroxy-3-(2-methyl-2 H-pyrazol-3yl)-phenyl]-urea (Compound 119)
• To a cooled and stirred solution of methyl hydrazine (1.46 g, 31.6 mmol) in pyridine was added slurry of 1-(4-Chloro-phenyl)-3-(4-oxo-4H-chromen-6-yl)-urea (2.5 g, 7.9 mmol) in pyridine over a period of 10 mins. The reaction mixture was left at this temperature for another 2 hrs and then warmed to room temperature slowly. After 6 hrs the reaction mixture turned clear. The reaction was stirred at this temperature for 18 hrs and pyridine was evaporated. The dark colored residue was dissolved in DMSO and purified using Varian Prep. HPLC system. (The two regioisomers were separated. The fractions containing Compound 119 were dried in vacuo to produce a colorless powder (1.78 g, 47%) 1-(4-Chloro-phenyl)-3-[4-hydroxy-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea. LCMS m/z (%)=343 (M+H,³⁵Cl 100), 345 (M+H,³⁷Cl, 32.5).¹H NMR (400 MHz, DMSO-d₆) δ: 9.59 (bs, 1H), 8.72 (bs, 1H), 8.48 (bs, 1H), 7.43-7.46 (dd, J=6.8,2.07 Hz, 2H), 7.41 (d, J=1.83 Hz, 1H), 7.28-7.30 (dd, J=7.13, 2.09 Hz,2H), 7.26 (d, J=2.72 Hz, 1H),6.88-6.90 (d, J=9.36 Hz, 1H), 6.21 (d, J=1.84 Hz, 1H), 3.67 (s, 3H).
Example 1.109Preparation of 1-(4-Chloro-phenyl)-3-14-hydroxy-3-(1-methyl-1H-pyrazol-3-yl)-phenyl]-urea (Compound 154)
• To a cooled and stirred solution of methyl hydrazine (1.46 g, 31.6 mmol) in pyridine was added slurry of Compound 119 (2.5 g, 7.9 mmol) in pyridine over a period of 10 mins. The reaction mixture was left at this temperature for another 2hrs and then warmed to room temperature slowly. After 6 hrs the reaction mixture turned clear. The reaction was stirred at this temperature for 18 hrs. Then pyridine was evaporated. The dark colored residue was dissolved in DMSO and purified using Varian Preperative HPLC system at a flow rate of 60 mL/Min. and λ=240. The regio isomers were separated. The fractions containing Compound 154 were dried in vacuo to produce an off-white solid 1-(4-Chloro-phenyl)-3-[4-hydroxy-3-(1-methyl-1H-pyrazol-3-yl)-phenyl]-urea (0.3 g, 12%). LCMS m/z (%)=343 (M+H,³⁵Cl 100), 345 (M+H,³⁷Cl, 32.5).¹H NMR (400 MHz, DMSO-d₆) δ: 10.26 (bs, 1H), 8.73 (bs, 1H), 8.46 (bs, 1H), 7.82 (d, J=2.32 Hz, 1H), 7.77 (d, J=3.62 Hz, 1H), 7.44-7.49 (m, 2H), 7.16-7.19 (dd, J=8.74, 2.62 Hz, 1H), 6.83-6.85 (d, J=8.72 Hz, 1H), 6.71-6.72 (d, J=2.36 Hz, 1H), 3.91 (s, 3H).
Example 1.110Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)4-hydroxy-phenyl]-3-(4-chloro-phenyl)-urea (Compound 121)
• To a stirred and cooled solution of Compound 119 (0.22 g, 0.63 mmol), in DMF (2.0 mL) was added N-chlorosuccinimide (0.168, 1.26 mmol). The reaction was stirred until the LCMS showed no starting material (2.5 hrs). The reaction mixture was poured into ice cooled water containing Na₂S₂O₃and NaHCO₃and the resulting solid was filtered, washed with ice-cooled water and dried in vacuo to afford a off-white solid 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-hydroxy-phenyl]-3-(4-chloro-phenyl)-urea (0.14 g, 58%). LCMS m/z (%)=377 (M+H,³⁵Cl,³⁵Cl, 100), 379 (M+H,³⁵Cl,³⁷Cl, 59.4), 381 (M+H,³⁷Cl,³⁷Cl, 10.0).¹H NMR (400 MHz, DMSO-d₆) δ: 9.76 (bs, 1H), 8.73 (bs, 1H), 8.56 (bs, 1H), 7.58 (s, 1H), 7.44-7.46 (dd, J=8.6, 2.03 Hz, 2H), 7.34-7.37 (dd, J=8.79, 2.7 Hz, 1H), 7.29 (dd, J=8.85, 2.07 Hz, 3H), 6.92-6.94 (d, J=6.78 Hz, IH), 3.64 (s, 3H).
Example 1.111Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)4-(3-dimethylamino-propoxy)-phenyl]-3-(4-chloro-phenyl)-urea (Compound 128)
• To a stirred and cooled solution of Compound 119, 1-(4-Chloro-phenyl)-3-[4-hydroxy-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea, (0.1 g, 0.2923 mmol), triphenyl phosphine (0.291 g, 1.1078 mmol) and 3-dimethyl amino propanol (0.114 g, 1.099 mmol) in THF (25 mL) was added diisopropyl azodicarboxylate (0.224 g, 1.104 mmol) slowly over 10 minutes. The reaction mixture was allowed to warm to room temperature and stirred for 4hrs at this temperature. The THF was evaporated and the syrup was dissolved in DMSO and purified using preperative HPLC at 60 mL/min flow and λ=240. The fractions containing the product were evaporated. The pink colored residue was subjected to 2^ndpurification using SiO₂flash chromatography (eluant: 1% methanol in DCM to 15% methanol in DCM). The fractions containing the product were evaporated to afford a colorless solid. To a cooled solution of the solid in methanol was added a solution of N-chlorosuccinimide (0.044 g, 0.3215 mmol) in methanol. The reaction mixture was stirred for 60 minutes. Next, the methanol was evaporated and the residue was purified using silica and 15% methanol in DCM as eluant. The fractions containing the product were evaporated and dried in vacuo to produce a off-white solid of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(4-chloro-phenyl)-urea (0.015 g, 12%). LCMS m/z (%)=462 (M+H³⁵Cl,³⁵Cl 100), 464 (M+H,³⁵Cl,³⁷Cl, 70.2), 466 (M+H,³⁷Cl,³⁷Cl, 11.2)¹H NMR (400 MHz, acetone-d₆) δ: 8.29 (bs, 1H), 8.21 (bs, 1H), 7.61-7.64 (dd, J=8.94, 2.73 Hz, 1H), 7.53-7.56 (dd, J=7.09, 2.09 Hz, 2H), 7.46 (s, 1H), 7.43-7.46 (d, J=2.7 Hz, 1H), 7.26-7.28 (dd, J=7.09, 2.07 Hz, 2H), 7.11-7.13 (d, J=8.98 Hz, 1H), 3.98-4.1 (m, 2H), 3.67 (s, 3H), 2.21-2.25 (m, 2H), 2.09 (s, 6H), 1.75-1.79 (m, 2H).
Example 1.112Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(3,4-difluoro-phenyl)-urea (Compound 148)
• To a cooled and stirred solution of Compound 136 (0.03 g, 0.0698 mmol), in methanol, was added N-bromosuccinimide (0.014 g, 0.077 mmol). The reaction mixture was stirred at this temperature for 10 minutes and warmed to ambient temperature. Methanol was evaporated and the residue was purified on silica using 1% MeOH/DCM to 15%MeOH/DCM as eluent. The fractions containing the product were evaporated in vacuo to produce 1-[3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(3,4-difluoro-phenyl)-urea as an off-white solid (0.014 g, 40%). LCMS m/z (%)=508 (M+H,⁷⁹Br, 100), 510 (M+H,⁸¹Br, 82.6),¹H NMR (400 MHz, acetone-d₆) δ: 8.69 (bs, 1H), 8.53 (bs, 1H), 7.70-7.76 (m, 1H), 7.59-7.62 (dd, J=8.95, 2.74 Hz, 1H), 7.46 (s, 6H), (d, J=2.7 Hz, 1H), 7.08-7.16 (m, 3H), 3.98-4.1 (m, 2H), 3.67 (s, 3H), 2.43-2.47 (m, 2H), 2.25 (s, 6H), 1.85-1.91 (m, 2H).
Example 1.113Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(2-chloro-phenyl)-urea (Compound 149)
• To a cooled and stirred solution of Compound 140 (0.04 g, 0.0936 mmol), in methanol, was added N-bromosuccinimide (0.018 g, 0.102 mmol). The reaction mixture was stirred at this temperature for 10 minutes and warmed to ambient temperature. Methanol was evaporated and the residue was purified on silica using 1% MeOH/DCM to 15% MeOH/DCM as eluent. The fractions containing the product were evaporated in vacuo to produce 1-[3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(2-chloro-phenyl)-urea as an off-white solid (0.02 g, 42%). LCMS m/z (%)=506 (M+H⁷⁹Br,³⁵Cl, 83.9), 508 (M+H,⁸¹Br,³⁵Cl, 100), 510 (M+H,⁸¹Br,³⁷Cl, 30)¹H NMR (400 MHz, acetone-d₆) ε: 8.59 (bs, 1H), 8.09-9.12 (dd, J=9.3, 1.51 Hz, 1H) 7.63 (bs, 1H), 7.43-7.46 (dd, J₁=8.95 Hz, J₂=2.75 Hz, 1H), 7.27 (s, 1H), 7.22-7.29 (d, J=2.72 Hz, 1H), 7.16-7.18 (dd, J=8.63, 1.4 Hz, 1H), 7.05-7.08 (m, 1H), 6.91-6.93 (d, J=8.98 Hz, 1H), 6.77-6.81 (m, 1H), 3.48-3.91 (m, 2H), 3.48 (s, 3H), 2.01-2.05 (m, 2H), 1.89 (s, 6H), 1.56-1.61 (m, 2H).
Example 1.114Preparation of 1-13-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(2-fluoro-phenyl)-urea (Compound 150)
• To a cooled and stirred solution of Compound 138 (0.04 g, 0.0972 mmol), in methanol, was added N-bromosuccinimide (0.019 g, 0.107 mmol). The reaction mixture was stirred at this temperature for 10 minutes and warmed to ambient temperature. Methanol was evaporated and the residue was purified on silica using 1% MeOH/DCM to 15% MeOH/DCM as eluant. The fractions containing the product were evaporated in vacuo to produce 1-[3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl)-3-(2-fluoro-phenyl)-urea as a off-white solid (0.02 g, 42%). LCMS m/z (%)=490 (M+H⁷⁹Br,100), 492 (M+H,⁸¹Br, 99.9).¹H NMR (400 MHz, acetone-d₆) δ: 8.59 (bs, 1H), 8.37 (d, J=1.57Hz, 1H) 8.1 (bs, 1H), 7.72-7.75(dd, J=8.95, 2.75, 1H), 7.57 (s, 1H), 7.52-7.53 (d, J=2.72 Hz, 1H), 7.18-7.22 (m, 3H), 7.07 (m,1H) 4.07-4.19 (m, 2H), 3.78 (s, 3H), 2.3-2.35 (m, 2H), 2.19 (s, 6H), 1.85-1.88 (m, 2H).
Example 1.115Preparation of 1-13-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-hydroxy-phenyl]-3-(2,4-difluoro-phenyl)-urea (Compound 103)
• 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2,4-difluoro-phenyl)-urea (Compound 8, 1.44 g, 3.30 mmol) was dissolved in anhydrous CH₂Cl₂(30 mL). The solution was stirred while cooling the temperature to 0° C. in an ice water bath. After allowing it to stir for another 10 minutes, AlCl₃(1.76 g, 13.20 mmol) was added slowly. This was followed by stirring the reaction for an additional 20 minutes, and subsequently increasing the temperature to 80° C. After one hour, the reaction was shown to be complete by TLC and LC/MS. It was worked up with EtOAc (2×50 mL) and 10% Potassium Sodium Tartrate (2×50 mL). Upon being treated to this work up, the aluminum was removed from the solution. The organic layer was then dried with Na₂SO₄, filtered, and the solvent was removed under reduced pressure. The residue was then purified by HPLC, yielding 1.43 g (100%) of Compound 103 LCMS m/z (%)=425 (M+H⁸¹Br, 100), 423 (M+H⁷⁹Br, 88).¹H NMR (400 MHz, DMSO-d₆) δ 9.74 (s, 1H), 8.87 (s, 1H), 8.40 (s, 1H), 8.08-8.03 (m, 1H), 7.58 (s, 1H), 7.36 (dd, J₁=8 Hz, J₂=4 Hz, 1H), 7.33-7.27 (m, 1H), 7.28 (d, J=2 Hz, 1H), 7.04-7.01 (m, 1H), 6.95 (d, J=8 Hz, 1H), 3.67 (s, 3H).
Example 1.116Preparation of 1-13-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenyl]-3-(2,4-difluoro-phenyl)-urea (Compound 123)
• Compound 103 (73.7 mg, 0.17 mmol) was dissolved in anhydrous THF (5 mL). PPh₃(173 mg, 0.64 mmol) and 2-Dimethylamino ethanol (65.5 μL, 0.63 mmol) were then added to the solution, and the reaction was stirred at room temperature. After stirring for five minutes, DIAD (127 μL, 0.64 mmol) was added to the reaction dropwise. The reaction was found to be complete by TLC and LC/MS after 30 minutes. The solvent was then removed under reduced pressure. The residue was purified twice by flash chromatography (Biotage, SiO₂, Dichloromethane/Methanol gradient elution) and twice by HPLC to afford 26.4 mg (31%) of Compound 123 as a light brown oil: LCMS m/z (%)=496 (M+H⁸¹Br, 100), 494 (M+H⁷⁹Br, 94).¹H NMR (400 MHz, DMSO-d₆) δ 8.99 (s, 1H), 8.44 (s, 1H), 8.07-8.01 (m, 1H), 7.59 (s, 1H), 7.52 (dd, J₁=8 Hz, J₂=4 Hz, 1H), 7.35 (d, J=4, 1H), 7.32-7.26 (m, 1H), 7.17 (d, J=12 Hz, 1H), 7.05-7.00 (m, 1H), 4.11 (dm, 2H), 3.65 (s, 3H), 2.58 (dm, 2H), 2.11 (s, 6H).
Example 1.117Preparation of (2-{2-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-13-(2,4-difluoro-phenyl)-ureido]-phenoxy}-ethyl)-carbamic acid tert-butyl ester (Compound 147)
• Compound 147 was prepared in a similar manner as described in Example 1.116 using N-Boc-aminoethanol and DEAD, providing 25 mg (39%) of Compound 147. LCMS m/z (%)=566 (M+H⁷⁹Br, 21), 568 (M+H⁸¹Br, 12).¹H NMR (400 MHz, DMSO-d₆) δ 9.00 (s, 1H), 8.45 (s, 1H), 8.07-8.00 (m, 1H), 7.59 (s, 1H), 7.51 (dd, J₁=8 Hz, J₂=2 Hz, 1H), 7.35 (d, J=4 Hz, 1H), 7.32 (m, 1H), 7.16 (d, J=8 Hz, 1H), 7.05-7.00 (m, 1H), 6.89-6.87 (m, 1H), 4.03-3.98 (m, 1H), 3.98-3.92 (m, 1H), 3.64 (s, 3H), 3.34-3.29 (m, 1H), 3.22-3.17 (m, 1H), 1.36 (s, 9H).
Example 1.118Preparation of 1-[3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-hydroxy-phenyl]-3-(4-chloro-phenyl)-urea (Compound 58)
• Compound 1, (1.56 g, 3.58 mmol) was dissolved in anhydrous CH₂Cl₂(50 mL). The solution was stirred while cooling the temperature to 0° C. in an ice water bath. After allowing it to stir for another 10 minutes, AlCl₃(1.91 g, 14.32 mmol) was added slowly. This was followed by stirring the reaction for an additional 20 minutes, and subsequently increasing the temperature to 80° C. After one hour, the reaction was shown to be complete by TLC and LC/MS. It was worked up with EtOAc (2×50 mL) and 10% Potassium Sodium Tartrate (2×50 mL). Upon being treated to this work up, the aluminum was removed from the solution. The organic layer was then dried with Na₂SO₄, filtered, and the solvent was removed under reduced pressure. The residue was purified by HPLC to afford Compound 58 (402 mg, 27%): LCMS m/z (%)=423 (M+H³⁷Cl, 100), 421 (M+H³⁵Cl, 98).¹H NMR (400 MHz, DMSO-d₆) δ 9.74 (s, 1H), 8.76 (s, 1H), 8.59 (s, 1H), 7.60 (s, 1H), 7.48 (d, J=8 Hz, 2H), 7.39 (dd, J₁=8 Hz, J₂=4 Hz, 1H), 7.32 (d, J=8 Hz, 2H), 7.28 (d, J=2 Hz, 1H), 6.96 (d, J=12 Hz, 1H), 3.67 (s, 3H).
Example 1.119Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-chloro-phenyl)-urea (Compound 91)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (30 mg, 0.13 mmol) was treated with 3-Chlorophenyl isocyanate (17 μL, 0.14 mmol) in a similar manner to Example 1.53, providing 25 mg (46%) of Compound 91: LCMS m/z (%)=391 (M+H³⁵Cl, 100), 393 (M+H³⁷Cl, 70).¹H NMR (400 MHz, acetone-d₆) δ: 8.51 (s, 1H), 8.41 (s, 1H), 7.84 (t, 1H), 7.71 (dd, J₁=8 Hz, J₂=4 Hz, 1H), 7.49 (s, 1H), 7.49 (d, J=2 Hz, 1H), 7.38 (d, J=8 Hz, 1H), 7.29 (t, 1H), 71.6 (d, J=8 Hz, 1H), 7.01 (d, J=8 Hz, 1H), 3.84 (s, 3H), 3.68 (s, 3H).
Example 1.120Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3,4-difluoro-phenyl)-urea (Compound 92)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (30 mg, 0.13 mmol) was treated with 3,4-Difluorophenyl isocyanate (17 μL, 0.14 mmol) in a similar manner to Example 1.53, providing 18.6 mg (34%) of Compound 92: LCMS m/z (%)=393 (M+H³⁵Cl, 100), 395 (M+H³⁷Cl, 38).¹H NMR (400 MHz, acetone-d₆) δ: 8.18 (s, 1H), 8.05 (s, 1H), 7.65 (m, 1H), 7.57 (dd, J₁=8 Hz, J₂=4 Hz, 1H), 7.36 (s, 1H), 7.33 (d, J=2 Hz, 1H), 7.09 (d, J=4 Hz, 1H), 7.06 (d, J=2 Hz, 1H), 7.04 (d, J=8 Hz, 1H), 3.72 (s, 3H), 3.55 (s, 3H).
Example 1.121Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3,5-difluoro-phenyl)-urea (Compound 93)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (30 mg, 0.13 mmol) was treated with 3,4-Difluorophenyl isocyanate (17 μL, 0.14 mmol) in a similar manner to Example 1.53, providing 24.6 mg (44%) of Compound 93: LCMS m/z (%)=393 (M+H³⁵Cl, 100), 395 (M+H³⁷Cl, 47).¹H NMR (400 MHz, acetone-d₆) δ: 8.26 (s, 1H), 8.01 (s, 1H), 7.47 (dd, J, =8 Hz, J₂=2 Hz, 1H), 7.26 (s, 1H), 7.22 (d, J=2 Hz, 1H), 7.04 (dd, J₁=12 Hz, J₂=4 Hz, 2H), 6.95 (d, J=8 Hz, 1h), 6.40 (m, 1H), 3.62 (s, 3H), 3.48 (s, 3H).
Example 1.122Preparation of 1-Benzoyl-3-[3-(4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 95)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (20 mg, 0.08 mmol) was treated with benzyl isocyanate (14 mg, 0.09 mmol) in a similar manner to Example 1.53, providing 10 mg (31%) of Compound 95: LCMS m/z (%)=385 (M+H³⁵Cl, 11), 387 (M+H³⁷Cl, 4).¹H NMR (400 MHz, CDCl₃) δ: 10.85 (s, 1H), 9.15 (s, 1H), 7.88 (d, J=12 Hz, 2H), 7.58 (dd, J₁=8 Hz, J₂=2 Hz, 1H), 7.54 (d, J=8 Hz, 1H), 7.49 (s, 1H), 7.43 (d, J=4 Hz, 1H), 7.41 (d, J=8 Hz, 2H), 6.95 (d, J=8 Hz, 1H), 3.75 (s, 3H), 3.64 (s, 3H).
Example 1.123Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)4-methoxy-phenyl]-3-(2-fluoro-phenyl)-urea (Compound 97)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (20 mg, 0.08 mmol) was treated with 2-Fluorophenyl isocyanate (10 μL, 0.09 mmol) in a similar manner to Example 1.53, providing 8.0 mg (26%) of Compound 97: LCMS m/z (%)=375 (M+H³⁵Cl, 100), 377(M+H³⁷Cl, 100), 377(M+H³⁷Cl, 43).¹H NMR (400 MHz, CDCl₃) δ: 8.26 (t, 1H), 7.73 (dd, J₁=8 Hz, J₂=4 Hz, 1H), 7.69 (s, 1H), 7.36 (t, 1H), 7.35 (d, J=4 Hz, 1H), 7.29 (t, 1H), 7.24 (d, J=8 Hz, 1H), 7.19 (d, J=8 Hz, 1H), 7.17 (d, J=8 Hz, 1H), 3.97 (s, 3H), 3.86 (s, 3H).
Example 1.124Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-cyano-phenyl)-urea (Compound 109)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (55 mg, 0.23 mmol) was treated with 3-Cyanophenyl isocyanate (37 mg, 0.26 mmol) in a similar manner to Example 1.53, providing 57 mg (65%) of Compound 109: LCMS m/z (%)=382 (M+H³⁵Cl, 100), 384 (M+H³⁷Cl, 38).¹H NMR (400 MHz, DMSO-d₆) δ: 9.02 (s, 1H), 8.85 (s, 1H), 7.98 (t, 1H), 7.68 (d, J=8 Hz, 1H), 7.62 (s, 1H), 7.59 (dd, J, =12 Hz, J₂=2 Hz, 1H), 7.50 (t, 1H), 7.42 (t, 1H), 7.42 (d, J=4 Hz, 1H), 7.18 (d, J=8 Hz, 1H), 3.78 (s, 3H), 3.62 (s, 3H).
Example 1.125Preparation of 1-Benzyl-3-[3-(4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea (Compound 105)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (59 mg, 0.25 mmol) was treated with benzyl isocyanate (34 μL, 0.28 mmol) in a similar manner to Example 1.53, providing 42.7 mg (46.1%) of Compound 105: LCMS m/z (%)=371 (M+H³⁵Cl, 100), 373 (M+H³⁷Cl, 40).¹H MNR (400 MHz, DMSO-d₆) δ: 8.55 (s, 1H), 7.58 (s, 1H), 7.50 (dd, J₁=8 Hz, J₂=4 Hz, 1H), 7.33 (m, 5H), 7.30 (d, J=4 Hz, 1H), 7.10 (d, J=12 Hz, 1H), 6.58 (s, 1H), 4.28 (s, 2H), 3.73 (s, 3H), 3.58 (s, 3H).
Example 1.126Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)4-methoxy-phenyl]-3-(3-nitro-phenyl)-urea (Compound 110)
• 3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (36 mg, 0.15 mmol) was treated with 3-Nitrophenyl isocyanate (28 mg, 0.17 mmol) in a similar manner to Example 1.53, providing 8.7 mg (15%) of Compound 110: LCMS m/z(%)=402 (M+H³⁵Cl, 100), 404 (M+H³⁷Cl, 38).¹H NMR (400 MHz, DMSO-d₆) δ: 9.22 (s, 1H), 8.84 (s, 1H), 8.55 (s, 1H), 7.83 (dd, J₁=8 Hz, J₂4 Hz, 1H), 7.72 (d, J=8 Hz, 1H), 7.62 (s, 1H), 7.61 (d, J=4 Hz, 1H), 7.58 (s, 1H), 7.58 (t, 1H), 7.41 (d, J=4 Hz, 1H), 7.19 (d, J=12 Hz, 1H), 3.78 (s, 3H), 3.62 (s, 3H).
Example 1.127Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-[3-(1-hydroxy-ethyl)-phenyl]-urea (Compound 94)
• Compound 17 (30.2 mg, 0.07 mmol, see Example 1.24) was dissolved in ethanol (5 mL). Sodium Borohydride (3.1 mg, 0.08 mmol) was added under Argon gas. The reaction was stirred overnight and found to be complete by TLC and LC/MS. The mixture was worked up with 1N Hydrogen Chloride solution (10 mL) and EtOAc (2×15 mL). The organic layers were combined and washed with water, dried over Na₂SO₄, filtered, and the solvent removed under reduced pressure. The residue was then purified by HPLC to afford 19.4 mg (63%) of Compound 94: LCMS m/z (%)=445 (M+H⁷⁹Br, 25), 447 (M+H⁸¹Br, 25).¹H NMR (400 MHz, CDCl₃) δ: 7.34 (dd, J₁=8 Hz, J₂=2 Hz, 1H), 7.26 (s, 1H), 7.20 (s, 1H), 7.14 (s, 1H), 7.11 (d, J=8 Hz, 1H), 7.09 (s, 1H), 7.06 (t, 1H), 6.95 (d, J=4 Hz, 1H), 6.85 (d, J=8 Hz, 1H), 6.76 (d, J=8 Hz, 1H), 4.65 (m, 1H), 3.59 (s, 3H), 3.49 (s, 3H), 1.27 (d, J=4 Hz, 3H).
Example 1.128Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-[3-(1-hydroxyimino-ethyl)-phenyl]-urea (Compound 96)
• Compound 17 (54 mg, 0.12 mmol, see Example 1.24) was dissolved in ethanol (10 mL). Hydroxylamine hydrochloride (17 mg, 0.24 mmol) was added under Argon gas. The pH of the solution was then adjusted to pH=4 with 1N Hydrogen Chloride solution. The reaction was stirred overnight at room temperature and found to be complete by TLC and LC/MS. The ethanol was removed under reduced pressure. Then, the residue was worked up with EtOAc (2×20 mL) and Brine (20 mL). The organic layers were combined, dried over Na₂SO₄, filtered, and the solvent removed under reduced pressure. The residue was then purified by HPLC to afford 8.8 mg (16%) of Compound 96: LCMS m/z (%)=458 (M+H⁷⁹Br, 96), 460 (M+H⁸¹Br, 100).¹H NMR (400 MHz, CDCl₃) δ: 7.78 (s, 1H), 7.70 (s, 1H), 7.68 (s, 1H), 7.48 (dd, J₁=12 Hz, J₂=4 Hz, 1H), 7.42 (s, 1H), 7.41 (dd, J₂=4 Hz, 1H), 7.39 (d, J=4 Hz, 1H), 7.30 (t, 1H), 7.19 (d, J=8 Hz, 1H), 7.15 (s, 1H), 7.08 (dd, J₁=12 Hz, J₂=4 Hz, 1H), 6.88 (dd, J₁=12 Hz, J₂=8 Hz, 1H), 3.66 (s, 3H), 3.58 (s, 3H), 1.99 (s, 3H).
Example 1.129Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-chloro-2-hydroxy-phenyl)urea (Compound 107)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (66 mg, 0.23 mmol) was dissolved in Dichloroethane (1.5 mL). In another flask, 4-nitrophenyl chloroformate was dissolved in Dichloroethane (3 mL) and the solution was heated until it fully dissolved using a heat gun. The two solutions were combined with a catalytic amount of pyridine, and stirred at room temperature. Once the carbamate formed in solution, “Stratospheres” scavenger was added. The mixture was stirred rapidly and filtered after two hours. 2-Amino-5-chlorophenol was then dissolved in pyridine (1 mL) and added to the reaction. After 5 hours of stirring, the reaction was found to be complete by TLC and LC/MS. The solvent was removed under reduced pressure and the residue was purified by HPLC providing 36.5 mg (35%) of Compound 107: LCMS m/z (%)=451 (M+H⁷⁹Br, 80),453 (M+H⁸¹Br, 100).¹H NMR (400 MHz, CDCl₃) δ: 7.74 (s, 1H), 7.67 (s, 1H), 7.53 (d, J=8 Hz, 1H), 7.28 (s, 1H), 7.28 (d, J=12 Hz, 1H), 7.12 (d, J=8 Hz, 1H), 6.99 (s, 1H), 6.91 (d, J=8 Hz, 1H), 3.89 (s, 3H), 3.82 (s, 3H).
Example 1.130Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2,2-difluoro-benzo[1,3]dioxol-5-yl)-urea (Compound 115)
• 3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (63 mg, 0.22 mmol) was coupled to 5-Amino-2,2-difluoro-1,3-benzodioxole in a similar manner as described in Example 1.129, providing 32 mg (30%) of Compound 115: LCMS m/z (%)=481 (M+H⁷⁹Br, 96), 483 (M+H⁸¹Br, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.42 (s, 1 H), 8.28 (s, 1H), 7.76 (d, J=4 Hz, 1H), 7.70 (dd, J₁=8 Hz, J₂=4 Hz, 1H), 7.52 (s, 1H), 7.45 (d, J=2 Hz, 1H), 7.19 (d, J=12 Hz, 1H), 7.16 (d, J=2 Hz, 1H), 7.14 (d, J=4 Hz, 1H), 3.83 (s, 3H), 3.70 (s, 3H).
Example 1.131Preparation of Intermediate 4-(2-Dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine
• Step 1: Preparation of N-[4-Hydroxy-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-acetamide.
• A mixture of N-[4-methoxy-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-acetamide (2.0 g, 8.15 mmol) inanhydrous 1,2-dichloroethane (60 mL) was cooled at 0° C. on an ice bath and stirred for 10 minutes. Anhydrous aluminium chloride (4.35 g, 32.6 mmol) was added and the reaction mixture stirred at 0° C. for 20 minutes, then moved to an oil bath and stirred at 80° C. for 1 hour. Ethyl acetate was added and washed with potasium sodium tartrate (10%) twice. Organic layer was separated, dried over anhydrous Na₂SO₄, filtered and concentrated to give a crude product that was purified via preparative HPLC. The corresponding fractions were collected and lyophilized to afford N-[4-hydroxy-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-acetamide as a white solid in 70.0% yield. LCMS m/z (%)=232 (M+H, 100).¹H NMR (400 MHz, DMSO-d₆) δ: 7.39 (s,1H), 6.86 (d, J=8.74 Hz, 1H), 6.62 (d, J=8.70 Hz, 1H), 6.47 (s, 1H), 6.15 (s, 1H), 4.80 (bs, 2H), 3.87(t, J=5.80 Hz, 2H), 3.63 (s, 3H), 2.44 (t, J=5.80 Hz, 2H), 2.08 (s, 6H).
• Step 2: Preparation of N-[4-(2-dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-acetamide.
• To a solution of N-[4-hydroxy-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-acetamide (0.85 g, 3.7 mmol) in THF (40 mL), triphenyl phosphine (2.91 g, 11.1 mmol) and 2-dimethylamino ethanol (1.11 mL, 11.1 mmol) were added followed by dropwise addition of diisopropyl azodicarboxylate (DIAD) (2.15 mL, 11.1 mmol). The reaction mixture was stirred at room temperature for 2 hours, concentrated to give a crude product that was subjected to a purification on preparative HPLC. The corresponding fractions were collected, neutralized with 1N NaOH and extracted with EtOAc four times to afford N-[4-(2-dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-acetamide as a colorless waxy solid in 51.2% yield. LCMS m/z (%)=303 (M+H, 100).¹H NMR (400 MHz, DMSO-d₆) δ: 9.94 (s, 1H), 7.63 (d, J=8.93 Hz, 1H), 7.52 (s, 1H), 7.46 (s, 1H), 7.14 (d, J=8.98 Hz, 1H), 6.25 (s, 1H), 4.07 (t, J=5.82Hz, 2H), 3.69 (s, 3H), 2.56 (t, J=5.80 Hz, 2H), 2.15 (s, 6H), 2.05 (s, 3H).
• Step 3: Preparation of 4-(2-dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine.
• Compound N-[4-(2-dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-acetamide (0.50 g, 1.7 mmol) was dissolved in ethanol (25 mL), sodium hydroxide (1.5 g, pallets) in 8 mL of water was added and reaction mixture stirred at 80° C. overnight then concentrated. Water and brine were added then extracted with EtOAc four times. Organic layers were combined, dried over anhydrous Na₂SO₄then solvent removed under reduced pressure to afford 4-(2-dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine as a light brown oil in 87.5% yield. LCMS m/z (%)=261 (M+H, 100).¹H NMR (400 MHz, DMSO-d₆) δ: 9.82 (s, 1H), 9.71 (bs, 1H), 7.48-7.45 (m, 3H), 6.93 (d, J=8.74 Hz, 1H), 6.23 (s, 1H), 3.7 (s, 3H), 2.0 (s, 3H).
Example 1.132Preparation of 1-(4-Chloro-phenyl)-3-14-(2-dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea (Compound 127)
• A solution of 4-(2-dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (26.0 mg, 0.1 mmol) in methylene chloride (1 mL) was treated with 4-chlorophenyl-isocyanate (13.3 μL, 0.105 mmol) then reaction mixture stirred at room temperature overnight and concentrated to give an oily residue that was subjected to a purification by flash chromatography (SiO₂, CH₂Cl₂/MeOH gradient elution) to afford Compound 127 as a white solid in 69.8% yield. LCMS m/z (%)=414 (M+H³⁵Cl, 100), 416 (M+H³⁷Cl, 36).¹H NMR (400 MHz, acetone-d₆) δ: 8.51 (s,1H), 8.36 (s, 1H), 7.62-7.59 (m, 3H), 7.50 (s, 1H), 7.42 (s, 1H), 7.31 (d, J=8.90 Hz, 2H), 7.12 (d, J=8.92 Hz, 1H), 6.24 (s, 1H), 4.11 (t, J=5.86 Hz, 2H), 3.77 (s, 3H), 2.61 (t, J=5.85 Hz, 2H), 2.20 (s, 6H).
Example 1.133Preparation of 1-14-(2-Dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-fluoro-phenyl)-urea (Compound 142)
• 4-(2-Dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (26.0 mg, 0.1 mmol) was treated with 4-fluorophenyl isocyanate (11.8 μL, 0.105 mmol) in a similar manner as described in Example 1.2 to afford Compound 142 as a white solid in 66.4%yield. LCMS m/z (%)=398 (M+H, 100).¹H NMR (400 MHz, acetone-d₆) δ: 8.33 (s,1H), 8.25 (s, 1H), 7.61-7.56 (m, 3H), 8.49 (s, 1H), 7.42 (s, 1H), 7.11-7.04 (m, 3H), 6.24 (s, 1H), 4.11 (t, J=5.85 Hz, 2H), 3.77 (s, 3H), 2.62 (t, J=5.85 Hz, 2H), 2.20 (s, 6H).
Example 1.134Preparation of 1-(2,4-Difluoro-phenyl)-3-14-(2-dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea (Compound 141)
• 4-(2-Dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (26.0 mg, 0.1 mmol) was treated with 2,4-difluorophenyl isocyanate (12.4 μL, 0.105 mmol) in a similar manner as described in Example 1.2 to afford Compound 141 as a white solid in 73.3% yield. LCMS m/z (%)=416 (M+H, 100).¹H NMR (400 MHz, DMSO-d₆) δ: 8.95 (s,1H), 8.46 (s, 1H), 8.08-8.02 (m, 1H), 7.45-7.42 (m, 2H), 7.37 (d, J=2.7 Hz, 1H), 7.33-7.27 (m, 1H), 7.12 (d, J=8.95 Hz, 1H), 7.05-6.98 (m, 1H), 6.24 (d, J=2.7 Hz, 1H), 4.03 (t, J=5.80 Hz, 2H), 3.67 (s, 3H), 2.54 (t, J=5.73 Hz, 2H), 2.12 (s, 6H).
Example 1.135Preparation of 1-(3-Acetyl-phenyl)-3-[4-(2-dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea (Compound 143)
• 4-(2-Dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (26.0 mg, 0.1 mmol) was treated with 3-acetylphenyl isocyanate (16.9 μL, 0.105 mmol) in a similar manner as described in Example 1.2 to afford Compound 143 as a colorless waxy solid in 64.3% yield. LCMS m/z (%)=422 (M+H, 100).¹H NMR (400 MHz, DMSO-d₆) δ: 8.98 (s,1H), 8.73 (s, 1H), 8.10 (s, 1H), 7.52-7.42 (m, 4H), 7.37 (d, J=8.06 Hz, 1H), 7.37 (d, J=6.75 Hz, 1H), 7.33-7.28 (m, 4H), 7.15 (d, J=8.98 Hz, 1H). 6.28 (s, 1H), 4.08 (t, J=5.80 Hz, 2H), 3.71 (s, 3H), 2.54 (m, 6H), 2.12 (s, 6H).
Example 1.136Preparation of 1-[4-(2-Dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(3-methoxy-phenyl)-urea (Compound 146)
• 4-(2-Dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (26.0 mg, 0.1 mmol) was treated with 3-methoxyphenyl isocyanate (13.8 μL, 0.105 mmol) in a similar manner as described in Example 1.2 to afford Compound 146 as a colorless waxy solid in 71.1% yield. LCMS m/z (%)=410 (M+H, 100).¹H NMR (400 MHz, DMSO-d₆) δ: 8.70 (s,1H), 8.63 (s, 1H), 7.45-7.42 (m, 2H), 7.37 (d, J=2.7 Hz, 1H), 7.18-7.10 (m, 3H), 6.91 (dd, J=8.02 Hz, 1.2 Hz, 1H), 6.53 (dd, J=7.71 Hz, 2.05 Hz, 1H), 6.24 (d, J=1.83 Hz, 1H),4.03 (t, J=5.80 Hz, 2H), 3.72 (s,3H),3.67 (s, 3H), 3.67 (s, 3H), 2.52 (t, J=5.80 Hz, 2H), 2.12 (s, 6H).
Example 1.137Preparation of 1-(2,2-Difluoro-benzo[1,3]dioxol-5-yl)-3-14-(2-dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea (Compound 144)
• To a solution of 4-(2-dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (26.0 mg, 0.1 mmol) in methylene chloride (1 mL) pyridine (24.3 μL, 0.3 mmol) and 4-nitrophenyl chloroformate (20.2 mg, 0.1 mmol) were added and the mixture was stirred at room temperature for 1 hour. 5-Amino-2,2-difluoro-1,3-benzodioxole (11.6 μL, 0.1 mmol) was added, the reaction mixture stirred at room temperature for 48 hours and concentrated to give an oily residue that was subjected to a purification by flash chromatography (SiO₂, CH₂Cl₂/MeOH gradient elution) to afford Compound 144 as an off-white solid in 14.0% yield. LCMS m/z (%)=460 (M+H, 100).¹H NMR (400 MHz, DMSO-d₆) δ: 10.30 (s,1H), 7.64 (d, J=8.96 Hz, 1H), 7.53 (s, 1H), 7.42 (s, 1H), 7.40-7.34 (m, 4H), 7.13 (d, J=8.92 Hz, 1H), 6.22 (s, 1H), 4.10 (t, J=5.56 Hz, 2H), 3.65 (s, 3H), 3.63 (s, 2H), 2.76-2.65 (m, 2H), 2.22 (s, 6H).
Example 1.138Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)4-hydroxy-phenyl]-3-(2,4-difluoro-phenyl)-urea (Compound 120)
• A mixture of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2,4-difluoro-phenyl)urea (Compound 77, example 1.61) (0.270 g, 0.69 mmol) inanhydrous 1,2-dichloroethane (10 mL) was cooled to 0° C. on an ice bath and stirred for 10 minutes. Anhydrous aluminium chloride (0.368 g, 2.76 mmol) was added and the reaction mixture stirred at 0° C. for 20 minutes, then moved to an oil bath and stirred at 80° C. for 1 hour. Ethyl acetate was added and washed with potasium sodium tartrate (10%) twice. Organic layer was separated, dried over anhydrous Na₂SO₄, filtered and concentrated to give the crude product that was further purified via HPLC. The corresponding fractions were collected and lyophilized to afford Compound 120 as a white solid in 75.0% yield. LCMS m/z (%)=379 (M+H³⁵Cl, 100), 381 (M+H³⁷Cl, 40).¹H NMR (400 MHz. DMSO-d₆) δ: 9.81 (s,1H), 8.92 (s,1H), 8.45 (s, 1H), 8.12-8.06 (m, 1H), 7.63 (s, 1H), 7.40-7.31 (m, 3H), 7.09-7.04 (m, 1H), 6.99 (d, J₁=8.72 Hz, 1H), 3.69 (s, 3H).
Example 1.139Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)4-(2-dimethylamino-ethoxy)-phenyl]-3-(2,4-difluoro-phenyl)-urea (Compound 132)
• To a solution of 1-[3-(4-chloro-2-methyl-2H-pyrazol-3-yl)-4-hydroxy-phenyl]-3-(2,4-difluoro-phenyl)urea (see above) (0.035 g, 0.09 mmol) in THF (3 mL), triphenyl phosphine (0.071 g, 0.27 mmol) and 2-dimethylamino ethanol (27.1 μL, 0.27 mmol) were added followed by dropwise addition of diisopropyl azodicarboxylate (DIAD) (52.3 μL, 0.27 mmol). The reaction mixture was stirred at room temperature for 2 hours, concentrated to give a crude product that was purified via preparative HPLC. The corresponding fractions were collected, neutralized with 1N NaOH and extracted with EtOAc. A second purification by flash chromatography (SiO₂, CH₂Cl₂/MeOH gradient elution) afforded Compound 132 as an off-white solid in 45.9% yield. LCMS m/z (%)=450 (M+H³⁵Cl, 100), 452 (M+H³⁷Cl, 32).¹H NMR (400 MHz. DMSO-d₆) δ: 9.11 (s, 1H), 8.56 (s, 1H), 8.06-8.00 (m, 1H), 7.60 (s, 1H), 7.52 (d, J=8.95 Hz, 1H), 7.38 (s, 1H), 7.33-7.27 (m, 1H), 7.17 (d, J=9.04 Hz, 1H), 7.05-6.98 (m, 1H), 4.12-3.95 (m, 2H), 3.65 (s, 3H), 2.55-2.51 (m, 2H), 2.10 (s, 6H).
Example 1.140Preparation of 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)phenyl]-3-(2,4-difluoro-phenyl)-urea (Compound 133)
• To a solution of 1-[3-(4-chloro-2-methyl-2H-pyrazol-3-yl)-4-hydroxy-phenyl]-3-(2,4-difluoro-phenyl)urea (see above) (0.035 g, 0.09 mmol) in THF (3mL), triphenyl phosphine (0.071 g, 0.27 mmol) and 3-dimethylamino propanol (31.6 μL, 0.27 mmol) were added followed by dropwise addition of diisopropyl azodicarboxylate (DIAD) (52.3 μL, 0.27 mmol). The reaction mixture was stirred at room temperature for 2 hours, concentrated to give a crude product that was purified via preparative HPLC. The corresponding fractions were collected, neutralized with 1N NaOH and extracted with EtOAc four times. A second purification by flash chromatography (SiO₂, CH₂Cl₂/MeOH gradient elution) afforded Compound 133 as an off-white solid in 25.4% yield. LCMS m/z (%)=464 (M+H³⁵Cl, 100), 466 (M+H³⁷Cl, 39).¹H NMR (400 MHz, DMSO-d₆) δ: 9.02 (s,1H), 8.47 (s, 1H), 8.07-8.01 (m, 1H), 7.62 (s, 1H), 7.51 (d, J=8.90 Hz, 1H), 7.38 (s, 1H), 7.33-7.28 (m, 1H), 7.15 (d, J=9.02 Hz, 1H), 7.03-6.97 (m, 1H), 4.11-3.94 (m, 2H), 3.63 (s, 3H), 2.28-2.18 (m, 2H), 2.11 (s, 6H), 1.78-1.69(m, 2H).
Example 1.141Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-trifluoromethoxy-phenyl]-3-(4-chloro-phenyl)-urea (Compound 108)
• Step A: Preparation of (3-bromo-4-trifluoromethoxy-phenyl)-carbamic acid tert-butyl ester.
• A solution of 3-bromo-4-(trifluoromethoxy)aniline (3.84 g, 15 mmol) in dioxane (15 mL) was treated with di-tert-butyl-dicarbonate (4.91 g, 22.5 mmol) then the reaction mixture heated at 80° C. overnight. The solvent was removed under reduced pressure to give an oily residue that was triturated with hexanes. The precipitate was collected by filtration to give (3-bromo-4-trifluoromethoxy-phenyl)-carbamic acid tert-butyl ester as a white solid in 61.0% yield.¹H NMR (400 MHz, DMSO-d₆) δ: 9.78 (bs,1H), 7.87 (s, 1H), 7.54-7.43 (m, 2H),1.51 (s, 9H).
• Step B: Preparation of [3-(2-methyl-2H-pyrazol-3-yl)-4-trifluoromethoxy-phenyl]-carbamic acid tert-butyl ester.
• A 25-mL round -bottom flask was charged with (3-bromo-4-trifluoromethoxy-phenyl)-carbamic acid tert-butyl ester (230.0 mg, 0.65 mmol), 1-methyl pyrazole-5-boronic acid (392.9 mg, 1.93 mmol), sodium carbonate (137.8 mg, 1.3 mmol), DME (5 mL) and water (0.5 mL) under argon atmosphere. Tetrakis(triphenylphosphine)palladium (75.1 mg, 0.065 mmol) was added and reaction mixture purged with argon again. The reaction mixture was heated at 80° C. overnight then cooled to room temperature. Ethyl acetate (10 mL) was added then washed with brine and water. Organic layer was separated, dried over anhydrous sodium sulfate, filtered and concentrated to give a residue that was subjected to a purification by flash chromatography (SiO₂, Hexanes/EtOAc gradient elution) to afford [3-(2-methyl-2H-pyrazol-3-yl)-4-trifluoromethoxy-phenyl]-carbamic acid tert-butyl ester as an off-white solid in 36.5% yield. LCMS m/z (%)=358 (M+H, 100).¹H NMR (400 MHz, DMSO-d₆) δ: 9.83 (bs,1H), 7.77 (d, J=8.95 Hz, 1H), 7.69 (s, 1H), 7.63 (s, 1H), 7.57 (d, J=8.84 Hz, 1H), 6.45 (s, 1H), 3.78 (s, 3H), 1.60 (s, 9H).
• Step C: Preparation of [3-(2-methyl-2H-pyrazol-3-yl)4-trifluoromethoxy-phenyl]-carbamic acid tert-butyl ester.
• To a solution of [3-(2-methyl-2H-pyrazol-3-yl)-4-trifluoromethoxy-phenyl]-carbamic acid tert-butyl ester (65 mg, 0.18 mmol) in DMF (1.5 mL) N-bromosuccinimide (35.6 mg, 0.2 mmol) was added at 0° C. then reaction mixture stirred at room temperature overnight. The resulting mixture was diluted with ethyl acetate, washed with brine and water. The organic layer was separated, dried over anhydrous sodium sulfate, filtered and concentrated to give a yellow oily residue that was subjected to a purification by flash chromatography (SiO₂, Hexanes/EtOAc gradient elution) to afford [3-(2-methyl-2H-pyrazol-3-yl)-4-trifluoromethoxy-phenyl]-carbamic acid tert-butyl ester as a white solid in 89.2% yield. LCMS m/z (%)=436 (M+H⁷⁹Br, 100), 438 (M+H⁸¹Br, 98).¹H NMR (400 MHz, CD₃OD) δ: 7.79 (d, J=8.90 Hz, 1H), 7.61(s, 1H), 7.55 (s, 1H), 7.43 (d,J=8.94 Hz, 1H), 3.73 (s, 3H), 1.55 (s, 9H).
• Step D: Preparation of 1-13-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-trifluoro-methoxy-phenyl]-3-(4-chloro-phenyl)-urea (Compound 108).
• To a solution of [3-(2-methyl-2H-pyrazol-3-yl)-4-trifluoromethoxy-phenyl]-carbamic acid tert-butyl ester (21.8 mg, 0.05 mmol) in methylene chloride (0.5 mL), trifluroacetic acid (0.5 mL) was added and reaction mixture stirred at room temperature for 20 minutes. The solvent was removed under reduced pressure to afford 3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-trifluoromethoxy-phenylamine trifluoroacetate as a colorless oil in quantitative yield. LCMS m/z (%)=336 (M+H⁷⁹Br, 100), 338 (M+H⁸¹Br, 95). This compound was dissolved in methylene chloride (0.8 mL) then treated with N,N-diisopropylethylamine until pH=7-8. 4-Chlorophenyl isocyanate (8.5 mg, 0.055 mmol) was added and reaction mixture stirred at room temperature overnight and concentrated to give a residue that was subjected to apurification by flash chromatography (SiO₂, Hexanes/EtOAc gradient elution) to afford Compound 108 as a white solid in 62.0% yield. LCMS m/z (%)=489 (M+H⁷⁹Br³⁵Cl, 93), 491 (M+H⁸¹Br³⁵Cl, 100), 493 (M+H⁸¹Br³⁷Cl, 34).¹H NMR (400 MHz, CD₃OD), δ: 7.71 (dd, J=8.98 Hz, 2.72 Hz, 1H), 7.64-7.62 (m, 2H), 7.49-7.45 (m, 3H), 7.33-7.30 (m, 2H), 3.76 (s, 3H).
Example 1.142Preparation of 1-13-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-trifluoromethoxy-phenyl]-3-(2,4-difluoro-phenyl)-urea (Compound 113)
• To a solution of [3-(2-methyl-2H-pyrazol-3-yl)-4-trifluoromethoxy-phenyl]-carbamic acid tert-butyl ester (21.8 mg, 0.05 mmol) in methylene chloride (0.5 mL), trifluroacetic acid (0.5 mL) was added and reaction mixture stirred at room temperature for 20 minutes. The solvent was removed under reduced pressure to afford 3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-trifluoromethoxy-phenylamine trifluoroacetate as a colorless oil in quantitative yield. LCMS m/z (%)=336 (M+H⁷⁹Br, 100), 338 (M+H⁸¹Br, 95). This compound was dissolved in methylene chloride (0.8 mL) then treated with N,N-diisopropylethylamine until pH =7-8. 2,4-Difluorophenyl isocyanate (8.5 mg, 0.055 mmol) was added and reaction mixture stirred at room temperature overnight and concentrated to give a residue that was subjected to a purification by flash chromatography (SiO₂, Hexanes/EtOAc gradient elution) to afford Compound 113 as a white solid in 46.3% yield. LCMS m/z (%)=491 (M+H⁷⁹Br, 100), 493 (M+H⁸¹Br, 98).¹H NMR (400 MHz, CD₃OD) δ: 8.06-8.00 (m, 1H), 7.71 (dd, J=9.00 Hz, 2.74 Hz, 1H), 7.65-7.62 (m, 2H), 7.48 (d, J=9.00 Hz, 1H), 7.09-7.00 (m, 1H), 6.99-6.94 (m, 1H), 3.76 (s, 3H).
Example 1.143Preparation of 1-(2,4-Difluoro-phenyl)3-[4-(3-dimethylamino-propoxy)3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea (Compound 124)
• To a solution of 4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (21.4 mg, 0.078 mmol) in CH₂Cl₂(2 mL) was added 2,4-difluorophenyl isocyanate (0.10 μL, 0.084 mmol) and stirred for two hours. The resulting material was purified by solid phase extraction (SCX, 1 gram cartridge), eluting with methanol (30 mL) followed by 2M NH₃in methanol (30 mL). The NH₃containing fractions were dried in vacuo to afford Compound 124 as a colorless solid (30.2 mg, 73%). LCMS m/z (%)=430 (MH⁺) (100),¹H NMR (400 MHz, DMSO-d₆) δ: 8.94 (bs, 1H), 8.46 (bs, 1H), 8.09-8.00 (m, 1H), 7.45 (d, J=1.80 Hz, 1H), 7.42 (dd, J=8.89, 2.72 Hz, 1H), 7.34-7.26 (m, 1H), 7.09 (d, J=8.94 Hz, 1H), 7.06-6.99 (m, 1H), 6.24 (d, J=1.83 Hz, 1), 3.97 (t, J=6.32 Hz, 2H), 3.65 (s, 3H), 2.23 (t, J=7.07 Hz, 2H), 2.10 (s, 6H), 1.78-1.69 (m, 2H).
Example 1.144Preparation of 1-[4-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(2-fluoro-phenyl)-urea (Compound 138)
• To a solution of 4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (60.6 mg, 0.221 mmol) in CH₂Cl₂(2 mL) was added 2-fluorophenyl isocyanate (0.27 μL, 0.240 mmol) and stirred for two hours. The resulting material was purified by solid phase extraction (SCX, 1 gram cartridge), eluting with methanol (30 mL) followed by 2M NH₃in methanol (30 mL). The NH₃containing fractions were dried in vacuo to afford Compound 138 as a colorless solid (85.5 mg, 91%). LCMS m/z (%)=412 (MH⁺) (100),¹H NMR (400 MHz, DMSO-d₆) δ: 9.36 (bs, 1H), 8.25 (bs, 1H), 8.15 (dd, J=8.34, 1.52 Hz, 1H), 7.47-7.42 (m, 3H), 7.40 (d, J=2.78 Hz, 1H), 7.31-7.26 (m, 1H), 7.11 (d, J=9.09 Hz, 1H), 7.05-6.99 (m, 1H), 6.25 (d, J=2.02 Hz, 1H), 3.98 (t, J=6.32 Hz, 2H), 3.66 (s, 3H), 2.19 (t, J=7.07 Hz, 2H), 2.07 (s, 6H), 1.77-1.69 (m, 2H).
Example 1.145Preparation of 1-[4-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-trifluoromethyl-phenyl)-urea (Compound 137)
• To a solution of 4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (45.8 mg, 0.167 mmol) in CH₂Cl₂(2 mL) was added 4-(trifluoromethyl)phenyl isocyanate (0.28 μL, 0.196 mmol) and stirred for two hours. The resulting material was purified by solid phase extraction (SCX, 1 gram cartridge), eluting with methanol (30 mL) followed by 2M NH₃in methanol (30 mL). The NH₃containing fractions were dried in vacuo to afford Compound 137 as a colorless solid (25.1 mg, 33%). LCMS m/z (%)=462 (MH⁺) (100),¹H NMR (400 MHz, DMSO-d₆) δ: 9.11 (bs, 1H), 8.75 (bs, 1H), 7.65 (d, J=9.08 Hz, 2H), 7.62 (d, J=9.35 Hz, 2H), 7.47 (dd, J=9.09, 2.78 Hz, 1H), 7.45 (d, J=1.77 Hz, 1H), 7.39 (d, J=2.78 Hz, 1H), 7.10 (d, J=8.84 Hz, 1H), 6.24 (d, J=1.77 Hz, 1H), 3.98 (t, J=6.32 Hz, 2H),3.66 (s, 3H), 2.19 (t, J=7.07 Hz,2H), 2.07 (s, 6H), 1.77-1.69 (m, 2H).
Example 1.146Preparation of 1-[4-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(2-fluoro-5-methyl-phenyl)-urea (Compound 139)
• To a solution of 4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (43.9 mg, 0.160 mmol) in CH₂Cl₂(2 mL) was added 2-fluoro-5-methylphenyl isocyanate (0.23 μL, 0.176 mmol) and stirred for two hours. The resulting material was purified by solid phase extraction (SCX, 1 gram cartridge), eluting with methanol (30 mL) followed by 2M NH₃in methanol (30 mL). The NH₃containing fractions were dried in vacuo to afford Compound 139 as a colorless solid (53.2 mg, 78%). LCMS m/z (%)=426 (MH⁺) (100),¹H NMR (400 MHz, DMSO-d₆) δ: 8.98 (bs, 1H), 8.42 (bs, 1H), 7.96 (dd, J=7.89, 1.96 Hz, 1H), 7.45 (d, J=1.82 Hz, 1H), 7.44-7.38 (m, 2H), 7.13-7.06 (m, 2H), 6.82-6.75 (m, 1H), 6.24 (d, J=1.85 Hz, 1H), 3.98 (t, J=6.35 Hz, 2H), 3.66 (s, 3H), 2.25 (s, 3H), 2.19 (t, J=7.03 Hz, 2H), 2.07 (s, 6H), 1.77-1.68 (m, 2H).
Example 1.147Preparation of 1-(2-Chloro-phenyl)-3-[4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea (Compound 140)
• To a solution of 4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (51.4 mg, 0.187 mmol) in CH₂Cl₂(2 mL) was added 2-chlorophenyl isocyanate (0.25 μL, 0.207 mmol) and stirred for two hours. The resulting material was purified by solid phase extraction (SCX, 1 gram cartridge), eluting with methanol (30 mL) followed by 2M NH₃in methanol (30 mL). The NH₃containing fractions were dried in vacuo to afford Compound 140 as a colorless solid (76.5 mg, 95%). LCMS m/z (%)=428 (M+H³⁵Cl, 100), 430 (M+H³⁷Cl, 37)¹H NMR (400 MHz, DMSO-d₆) δ: 9.36 (bs, 1H), 8.25 (bs, 1H), 8.15 (dd, J=8.33, 1.48 Hz, 1H), 7.48-7.42 (m, 3H), 7.40 (d, J=2.70 Hz, 1H), 7.31-7.26 (m, 1H), 7.11 (d, J=8.92 Hz, 1H), 7.05-6.99 (m, 1H), 6.25 (d, J=1.84 Hz, 1H), 3.98 (t, J=6.36 Hz, 2H), 3.66 (s, 3H), 2.19 (t, J=7.04 Hz, 2H), 2.07 (s, 6H), 1.77-1.69 (m, 2H).
Example 1.148Preparation of 1-(3-Chloro-phenyl)-3-[4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea (Compound 134)
• To a solution of 4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (47.4 mg, 0.173 mmol) in CH₂Cl₂(2 mL) was added 3-chlorophenyl isocyanate (0.24 μL, 0.197 mmol) and stirred for two hours. The resulting material was purified by solid phase extraction (SCX, 1 gram cartridge), eluting with methanol (30 mL) followed by 2M NH₃in methanol (30 mL). The NH₃containing fractions were dried in vacuo to afford Compound 134 as a colorless solid (31.0 mg, 42%). LCMS m/z (%)=428 (M+H³⁵Cl, 100), 430 (M+H³⁷Cl, 39),¹H NMR (400 MHz, DMSO-d₆) δ: 8.64 (bs, 1H), 8.59 (bs, 1H), 7.47-7.41 (m,3H), 7.45 (d, J=1.79 Hz, 1H), 7.37 (d, J=2.71 Hz, 1H), 7.30-7.23 (m, 2H), 7.09 (d, J=8.97 Hz, 1H), 6.98-6.92 (m, 1H), 6.24 (d, J=1.85 Hz, 1H), 3.97 (t, J=6.36 Hz, 2H), 3.66 (s, 3H), 2.19 (t, J=7.04 Hz, 2H), 2.07 (s, 6H), 1.77-1.69 (m, 2H).
Example 1.149Preparation of 1-[4-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-methoxy-phenyl)-urea (Compound 131)
• To a solution of 4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (38.3 mg, 0.140 mmol) in CH₂Cl₂(2 mL) was added 4-methoxyphenyl isocyanate (0.21 μL, 0.162 mmol) and stirred for two hours. The resulting material was purified by solid phase extraction (SCX, 1 gram cartridge), eluting with methanol (30 mL) followed by 2M NH₃in methanol (30 mL). The NH₃containing fractions were dried in vacuo to afford Compound 131 as a colorless solid (53.1 mg, 90%). LCMS m/z (%)=424 (MH⁺) (100),¹H NMR (400 MHz, DMSO-d₆) δ: 8.49 (bs, 1H), 8.43 (bs, 1H), 7.44 (d, J=1.86 Hz, 1H), 7.42 (dd, J=8.92, 2.73 Hz, 1H), 7.36 (d, J=2.71 Hz, 1H), 7.33 (d, J=9.09 Hz, 2H), 7.07 (d, J=8.96 Hz, 1H), 6.85 (d, J=9.09 Hz, 2H), 6.23 (d, J=1.82 Hz, 1H), 3.96 (t, J=6.35 Hz, 2H), 3.71 (s, 3H), 3.65 (s,3H), 2.18 (t, J=7.05 Hz, 2H), 2.07 (s, 6H), 1.77-1.69 (m, 2H).
Example 1.150Preparation of 1-14-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-p-tolyl-urea (Compound 130)
• To a solution of 4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (45.9 mg, 0.167 mmol) in CH₂Cl₂(2 mL) was added 4-methylphenyl isocyanate (0.24 μL, 0.191 mmol) and stirred for two hours. The resulting material was purified by solid phase extraction (SCX, 1 gram cartridge), eluting with methanol (30 mL) followed by 2M NH₃in methanol (30 mL). The NH₃containing fractions were dried in vacuo to afford Compound 130 as a colorless solid (61.8 mg, 91%). LCMS m/z (%)=408 (MH⁺) (100),¹H NMR (400 MHz, DMSO-d₆) δ: 8.53 (bs, 1H), 8.52 (bs, 1H), 7.44 (d, J=1.77 Hz, 1H), 7.43 (dd, J=8.91, 2.73 Hz, 1H), 7.36 (d, J=2.70 Hz, 1H), 7.31 (d, J=8.43 Hz, 2H), 7.08 (d, J=8.92 Hz, 1H), 7.06 (d, J=8.32 Hz, 2H), 6.23 (d, J=1,82 Hz, 1H), 3.96 (t, J=6.36 Hz, 2H), 3.65 (s, 3H), 2.23 (s, 3H), 2.19 (t, J=7.05 Hz, 2H), 2.07 (s, 6H), 1.77-1.69 (m, 2H).
Example 1.151Preparation of 1-(3-Chloro-4-fluoro-phenyl)3-[4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea (Compound 135)
• To a solution of 4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (57.3 mg, 0.209 mmol) in CH₂Cl₂(2 mL) was added 3-chloro-4-fluorophenyl isocyanate (0.30 μL, 0.241 mmol) and stirred for two hours. The resulting material was purified by solid phase extraction (SCX, 1 gram cartridge), eluting with methanol (30 mL) followed by 2M NH₃in methanol (30 mL). The NH₃containing fractions were dried in vacuo to afford Compound 135 as a colorless solid (66.2 mg, 71%). LCMS m/z (%)=446 (M+H³⁵Cl, 100), 448 (M+H³⁷Cl, 35),¹H NMR (400 MHz, DMSO-d₆) δ: 8.87 (bs, 1H), 8.69 (bs, 1H), 7.81-7.77 (m, 1H), 7.47-7.42 (m, 2H), 7.37 (d, J=2.71 Hz, 1H), 7.35-7.26 (m, 2H), 7.09 (d, J=8.98 Hz, 1H), 6.24 (d, J=1.83 Hz, 1H), 3.98 (t, J=6.36 Hz, 2H), 3.65 (s, 3H), 2.19 (t, J=7.04 Hz, 2H), 2.07 (s, 6H), 1.77-1.69 (m, 2H).
Example 1.152Preparation of 1-(3,4-Difluoro-phenyl)-3-[4-(3-dimethylamino-propoxy)3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea (Compound 136)
• To a solution of 4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (61.1 mg, 0.223 mmol) in CH₂Cl₂(2 mL) was added 3,4-difluorophenyl isocyanate (0.30 μL, 0.256 mmol) and stirred for two hours. The resulting material was purified by solid phase extraction (SCX, 1 gram cartridge), eluting with methanol (30 mL) followed by 2M NH3 in methanol (30 mL). The NH₃containing fractions were dried in vacuo to afford Compound 136 as a colorless solid (53.3 mg, 56%). LCMS m/z (%)=430 (M+H, 100),¹H NMR (400 MHz, DMSO-d₆) δ: 8.93 (bs, 1H), 8.72 (bs, 1H), 7.71-7.61 (m, 1H), 7.49-7.42 (m, 2H), 7.37 (d, J=2.68 Hz, 1H), 7.35-7.28 (m, 1H), 7.14-7.06 (m, 1H), 7.09 (d, J=8.96 Hz, 1H), 6.23 (d, J=1.82 Hz, 1H), 3.97 (t, J=6.37 Hz, 2H), 3.65 (s, 3H), 2.19 (t, J=7.05 Hz, 2H), 2.07 (s, 6H), 1.77-1.68 (m, 2H).
Example 1.153Preparation of 1-[4-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-phenyl-urea (Compound 145)
• To a solution of 4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (45.6 mg, 0.166 mmol) in CH₂Cl₂(2 mL) was added phenyl isocyanate (0.20 μL, 0.184 mmol) and stirred for two hours. The resulting material was purified by solid phase extraction (SCX, 1 gram cartridge), eluting with methanol (30 mL) followed by 2M NH₃in methanol (30 mL). The NH₃containing fractions were dried in vacuo to afford Compound 145 as a colorless solid (45.3 mg, 69%). LCMS m/z (%)=394 (M+H, 100),¹H NMR (400 MHz, DMSO-d₆) δ: 8.64 (bs, 1H), 8.59 (bs, 1H), 7.48-7.41 (m, 4H), 7.37 (d, J=2.71 Hz, 1H), 7.29-7.23 (m, 2H), 7.09 (d, J=8.97 Hz, 1H), 6.98-6.92 (m, 1H), 6.24 (d, J=1.85 Hz, 1H), 3.97 (t, J=6.36 Hz, 2H), 3.66 (s, 3H), 2.19 (t, J=7.04 Hz, 2H), 2.07 (s, 6H), 1.77-1.68 (m, 2H).
Example 1.154Preparation of 1-[4-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-fluoro-phenyl)-urea (Compound 125)
• To a solution of 4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (24.6 mg, 0.090 mmol) in CH₂Cl₂(2 mL) was added 4-fluorophenyl isocyanate (0.12 μL, 0.107 mmol) and stirred for two hours. The resulting material was purified by solid phase extraction (SCX, 1 gram cartridge), eluting with methanol (30 mL) followed by 2M NH₃in methanol (30 mL). The NH₃containing fractions were dried in vacuo to afford Compound 125 as a colorless solid (27.0 mg, 73%). LCMS m/z (%)=412 (M+H, 100),¹H NMR (400 MHz, DMSO-d₆) δ: 8.67 (bs, 1H), 8.58 (bs, 1H), 7.48-7.41 (m, 4H), 7.36 (d, J=2.70 Hz, 1H), 7.14-7.06 (m, 3H), 6.23 (d, J=1.82 Hz, 1H), 3.97 (t, J=6.34 Hz, 2H), 3.65 (s, 3H), 2.18 (t, J=7.05 Hz, 2H), 2.07 (s, 6H), 1.77-1.68 (m, 2H).
Example 1.155Preparation of 1-(4-Chloro-benzyl)3-[4-(3-dimethylamino-propoxy)3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea (Compound 126)
• To a solution of 4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (20.5 mg, 0.075 mmol) in CH₂Cl₂(2 mL) was added 4-chlorobenzyl isocyanate (0.17 μL, 0.128 mmol) and stirred overnight. The resulting material was purified by solid phase extraction (SCX, 1 gram cartridge), eluting with methanol (30 mL) followed by 2M NH₃in methanol (30 mL). The NH₃containing fractions were dried in vacuo to afford Compound 126 as a slightly yellow oil (29.8 mg, 90%). LCMS m/z (%)=442 (M+H³⁵Cl, 100), 444 (M+H³⁷Cl, 40)¹H NMR (400 MHz, DMSO-d₆) δ: 8.53 (bs, 1H),7.43 (d, J=1.81 Hz, 1H), 7.41-7.36 (m, 4H), 7.34-7.28 (m, 3H), 7.03 (d, J=8.94 Hz, 1H), 6.63 (d, J=6.00 Hz, 1H), 6.20 (d, J=1.83 Hz, 1H), 4.26 (d, J=5.96 Hz, 2H), 3.94 (t, J=6.36 Hz, 2H), 3.63 (s, 3H), 2.18 (t, J=7.05 Hz, 2H), 2.06 (s, 6H), 1.77-1.69 (m, 2H).
Example 1.156Preparation of 1-(2,2-Difluoro-benzo[1,3]dioxol-5-yl)-3-[4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea (Compound 129)
• To a solution of 4-nitrophenyl chloroformate (55.1 mg, 0.273 mmol) in 1,2-dichloroethane (7 mL) and pyridine (22 μL, 0.272 mmol) was added 5-amino-2,2-difluoro-1,3-benzodioxole (28 μL, 0.241 mmol) and stirred for one hour. A spatula of StratoSpheres PL-DETA resin was added and stirring continued for an additional hour. The resulting mix was filtered (washing with 3mL 1,2-dichloroethane) into a flask containing 4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (49.7 mg, 0.181 mmol) and stirring continued overnight. The resulting material was purified by HPLC. The product was dried in vacuo to afford Compound 129 as a white solid (29.0 mg, 34%). LCMS m/z (%)=474 (M+H, 100),¹H NMR (400 MHz, DMSO-d₆) δ: 8.91 (bs, 1H), 8.61 (bs, 1H), 7.65 (d, J=2.09 Hz, 1H), 7.44 (d, J=1.86 Hz, 1H), 7.44 (dd, J=8.88, 2.82 Hz, 1H), 7.37 (d, J=2.71 Hz, 1H), 7.29 (d, J=8.75 Hz, 1H), 7.09 (d, J=8.95 Hz, 1H), 7.07 (dd, J=8.78, 2.18 Hz, 1H), 6.23 (d, J=1.81 Hz, 1H), 3.97 (t, J=6.35 Hz, 2H),3.65 (s, 3H), 2.19 (t, J=7.03 Hz, 2H), 2.07 (s, 6H), 1.77-1.67 (m, 2H).
Example 1.157Preparation of Dimethyl-{3-[2-(2-methyl-2H-pyrazol-3-yl)-4-nitro-phenoxy]-propyl}-amine
• Dimethyl-{3-[2-(2-methyl-2H-pyrazol-3-yl)-4-nitro-phenoxy]-propyl }-amine was synthesized from 2-(2-methyl-2H-pyrazol-3-yl)-4-nitro-phenol (4.064 g) using a similar manner as described in Example 1.139. Yellow oil (3.147 g, 56%). LCMS m/z (%)=305 (M+H, 100),¹H NMR (400 MHz, DMSO-d₆) δ: 8.35 (dd, J=9.19, 2.90 Hz, 1H), 8.10 (d, J=2.88 Hz, 1H), 7.50 (d, J=1.86 Hz, 1H), 7.39 (d, J=9.26 Hz, 1H), 6.37 (d, J=1.86 Hz, 1H), 4.21 (t, J=6.40 Hz, 2H), 3.67 (s, 3H), 2.21 (t, J=6.98 Hz, 2H), 2.08 (s, 6H), 1.85-1.76 (m, 2H).
Example 1.158Preparation of N-[4-Hydroxy-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-acetamide
• To a suspension of N-[4-methoxy-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-acetamide (2.57 g, 10.48 mmol) in 1,2-dichloroethane (75 mL) was added BBr₃(10 mL, 106 mmol) and stirred for three hours. The nonhomogeneous suspension was heated to reflux for 15 minutes and then cooled to room temperature. The reaction was quenched by slow addition of methanol. The resulting material was purified by HPLC. The product was dried in vacuo to afford N-[4-hydroxy-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-acetamide as a white solid (508 mg, 21%). LCMS m/z (%)=232 (M+H, 100),¹H NMR (400 MHz, DMSO-d₆) δ: 9.77 (bs, 1H), 9.66 (bs, 1H), 7.44-7.40 (m, 3H), 6.89 (d, J=8.8 Hz, 1H), 6.37 (d, J=1.81 Hz, 1H), 3.66 (s, 3H), 1.99 (s, 3H).
Example 1.159Preparation of N-[4-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-acetamide
• N-[4-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-acetamide was synthesized from N-[4-hydroxy-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-acetamide (489 mg) using a similar manner as described in Example 1.139. Colorless oil (375.1 mg, 56%). LCMS m/z (%)=317 (M+H, 100),¹H NMR (400 MHz, DMSO-d₆) δ: 9.89 (bs, 1H), 7.58 (dd, J=8.92, 2.66 Hz, 1H), 7.48 (d, J=2.65 Hz, 1H), 7.44 (d, J=1.84 Hz, 1H), 7.08 (d, J=8.98 Hz, 1H), 6.21 (d, J=1.85 Hz, 1H), 3.97 (t, J=6.37 Hz, 2H), 3.63 (s, 3H), 2.19 (t, J=7.03 Hz, 2H), 2.07 (s, 6H), 2.01 (s, 3H), 1.77-1.68 (m, 2H).
Example 1.160Preparation of 4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine
• Method 1: Dimethyl-{3-[2-(2-methyl-2H-pyrazol-3-yl)-4-nitro-phenoxy]-propyl}-amine (1.4047 g, 4.62 mmol) and 5% Pd/C (114 mg) were stirred in methanol (50 mL) under 1 atm of hydrogen for 75 minutes. The suspension was filtered through celite and dried in vacuo to afford 4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine as an orange oil (1.27 g, 100%).
• Method 2. 4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenylamine (375 mg, 1.18 mmol) and 50% NaOH in H₂O (2.5 mL) were refluxed overnight in methanol (20 mL). The resulting material was purified by HPLC to give an orange oil (230.2 mg, 71%).
• LCMS m/z (%)=275 (M+H, 100),¹H NMR (400 MHz, DMSO-d₆) δ: 7.40 (d, J=1.81 Hz, 1H), 6.85 (d, J=8.73 Hz, 1H), 6.62 (dd, J=8.68, 2.82 Hz, 1H), 6.47 (d, J=2.80 Hz, 1H), 6.15 (d, J=1.83 Hz, 1H), 4.80 (bs, 2H), 3.81 (t, J=6.35 Hz, 2H), 3.62 (s, 3H), 2.13 (t, J=7.04 Hz, 2H), 2.05 (s, 6H), 1.69-1.59 (m, 2H).
Example 1.161Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-dimethylamino-phenyl)-urea (Compound 116)
• To 3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenylamine (34.9 mg, 0.124 mmol) in CH₂Cl₂(3 mL) was added 4-(dimethylamino)phenyl isocyanate (21 mg, 0.129 mmol) and stirred for two days. The resulting material was purified by HPLC. The product was dried in vacuo to afford Compound 116 as a waxy solid (13.5 mg, 25%). LCMS m/z (%)=444 (M+H⁷⁹Br, 100), 446 (M+H⁸¹Br, 95),¹H NMR (400 MHz, DMSO-d₆) δ: 8.51 (bs, 1H), 8.26 (bs, 1H), 7.61 (s, 1H), 7.53 (dd, J=8.97, 2.71 Hz, 1H), 7.34 (d, J=2.70 Hz, 1H), 7.24 (d, J=9.03 Hz, 2H), 7.12 (d, J=9.05 Hz, 1H), 6.68 (d, J=9.07 Hz, 2H), 3.75 (s, 3H), 3.63 (s, 3H), 2.82 (s, 6H).
Example 1.162Preparation of 1-(4-Chloro-phenyl)-3-[4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea (Compound 122)
• Compound 122 was synthesized from Compound 119 (79.2 mg, 0.231 mmol) using a similar manner as described in Example 1.139. White solid (19.6 mg,20%). LCMS m/z (%)=428 (M+H³⁵Cl, 100), 430 (M+H³⁷Cl, 39),¹H NMR (400 MHz, DMSO-d₆) δ: 8.80 (bs, 1H), 8.63 (bs, 1H), 7.50-7.42 (m, 4H), 7.36 (d, J=2.71 Hz, 1H), 7.31 (d, J=8.90 Hz, 2H), 7.09 (d, J=8.96 Hz, 1H), 6.23 (d, J=1.81 Hz, 1H), 3.97 (t, J=6.35 Hz, 2H), 3.65 (s, 3H), 2.19 (t, J=7.05 Hz, 2H), 2.07 (s, 6H), 1.77-1.68 (m, 2H).
Example 1.163Preparation of 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(4-chloro-phenyl)-urea (Compound 117)
• Compound 117 was synthesized from Compound 58 (65.1 mg, 0.154 mmol) using a similar manner as described in Example 1.139. White solid (41.8 mg, 53%). LCMS m/z (%)=506 (M+H⁷⁹Br, 100), 508 (M+H⁸¹Br, 81),¹H NMR (400 MHz, DMSO-d₆) δ: 8.81 (bs, 1H), 8.71 (bs, 1H), 7.62 (s, 1H). 7.53 (dd, J=8.96, 2.71 Hz, 1H), 7.47 (d, J=8.92 Hz, 2H), 7.35 (d, J=2.70 Hz, 1H), 7.31 (d, J=8.88 Hz, 2H), 7.14 (d, J=9.03 Hz, 1H), 4.07-3.99 (m, 1H), 3.98-3.89 (m, 1H), 3.64 (s, 3H), 2.18 (t, J=6.58 Hz, 2H), 2.07 (s, 6H), 1.77-1.66 (m, 2H).
Example 1.164Preparation of {2-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-13-(4-chloro-phenyl)-ureido]-phenoxy}-acetic acid (Compound 118)
• {2-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-[3-(4-chloro-phenyl)-ureido]-phenoxy}-acetic acid ethyl ester was synthesized from Compound 58 (125.5 mg, 0.298 mmol) using a similar manner as described in Example 1.139. The resulting material was purified by HPLC. The product was dried in vacuo to afford the ethyl ester as an impure brown solid (99.9 mg).
• To a solution of the ethyl ester in methanol (1 mL) and THF (5 mL) was added 1M LiOH in H₂O (1 mL). After 30 minutes the resulting material was purified by HPLC. The product was dried in vacuo to afford Compound 118 as a white solid (54.0 mg, 38% over two steps). LCMS m/z (%)=479 (M+H⁷⁹Br, 71), 481 (M+H⁸¹Br, 100),¹H NMR (400 MHz, DMSO-d₆) δ: 13.06 (bs, 1H), 8.80 (bs, 1H), 8.73 (bs, 1H), 7.61 (s, 1H), 7.51 (dd, J=9.02, 2.61 Hz, 1H), 7.47 (d, J=8.87 Hz, 2H), 7.38 (d, J=2.67 Hz, 1H), 7.31 (d, J=8.85 Hz, 2H), 7.00 (d, J=9.08 Hz, 1H), 4.75 (d, J=16.65 Hz, 1H), 4.68 (d, J=16.61 Hz, 1H), 3.72 (s, 3H).
Example 1.165Preparation of 1-[3-(4-Bromo-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2,4-difluoro-phenyl)-urea (Compound 152)
• Step 1: Preparation of 3-Diethylamino-1-(2-hydroxy-5-nitro-phenyl)-propenone.
• 6-Nitrochromone (6.64g, 34.78 mmol) was dissolved in pyridine (55 mL) by warming at 55° C. Diethylamine (3.05 g, 41.73 mmol) was added in drops under nitrogen at 55° C. with stirring, and the mixture was stirred for 40 minutes [LCMS showed complete conversion to product, peak at 265(M+H)]. The resulting mixture was cooled to room temperature and solvent removed under vacuum to afford the product as a yellow solid (8.94g, 97%). LCMS m/z (%)=265 (M+H, 100),¹H NMR (Bruker, 400 MHz, CDCl₃) δ: 15.3 (s, 1H), 8.61 (s, 1H), 8.22 (dd, J=12,4 Hz, 1H), 8.01 (d, J=12 Hz, 1H), 6.98 (d, J=8 Hz, 1H), 5.85 (d, J=16 Hz, 1H), 3.45 (q, J=8 Hz, 4H), 1.31 (t, J=8 Hz, 6H).
• Step 2: Preparation of 3-Diethylamino-1-(2-methoxy-5-nitro-phenyl)-propenone.
• To a stirred solution of 3-Diethylamino-1-(2-hydroxy-5-nitro-phenyl)-propenone (6.5 g, 24.6 mmole) in acetone (200 mL) was added potassium carbonate (6.8g, 49.2 mmole). After 30 minutes dimethyl sulfate (3.73 g, 29.5 mmole) was added to the reaction mixture and stirred at ambient temperature for 20 hrs. The slurry was filtered off and the filtrate was evaporated to furnish a yellow solid. The crude was purified on silica (Biotage) using hexane to 30% ethyl acetate in hexane as eluant. The fractions containing the product were evaporated in vacuo to afford a light yellow solid (5.2 g, 76%). LCMS m/z (%)=279 (M+H, 100),¹H NMR (Bruker, 400 MHz, CDCl₃) δ: 8.5 (bs, 1H), 8.23-8.26 (dd, J=9.1, 2.1 Hz, 1H), 7.6 (bs, 1H), 6.98-7.01 (d, J=9.0 Hz, 1H), 5.51-5.54 (d, J=12.84 Hz, 1H), 3.98 (s, 3 H), 3.28-3.31 (q, J=6.95 Hz, 4H), 1.31 (t, J=6.68 Hz, 6H).
• Step 3: Preparation of 1-(5-Amino-2-methoxy-phenyl}3-diethylamino-propenone.
• To a solution of3-Diethylamino-1-(2-methoxy-5-nitro-phenyl)-propenone (0.6g, 2.16 mmole) in methanol (30 mL) purged with argon was added 5% Pd—C (Degussa, 0.25 g). Then hydrogen gas was bubbled (30 minutes) through the mixture until LCMS and TLC showed complete conversion to product. The slurry was filtered off through a celite and the filtrate was evaporated in vacuo to furnish a yellow solid (0.45 g, 84%). LCMS m/z (%)=249 (M+H, 100),¹H NMR (Bruker, 400 MHz, CDCl₃) δ: 6.9 (bs, 1H), 6.76-6.78 (d, J=8.6 Hz, 1H), 6.67-6.71 (dd, J=8.58, 2.61 Hz, 2H), 5.64(bs, 1H), 3.78 (s, 3H), 3.5 (bs, 1H), 3.28-3.31 (q, J=6.95 Hz, 4H), 1.22-1.24 (t, J=6.68 Hz, 6H).
• Step 4: Preparation of 1-[3-(3-Diethylamino-acryloyl)-4-methoxy-phenyl]-3-(2,4-difluoro-phenyl)-urea
• To a solution of 1-(5-Amino-2-methoxy-phenyl)-3-diethylamino-propenone (1.78 g, 7.18 mmole) in methylene chloride (60 mL) was added a solution of 2,4-difluorophenyl isocyanate (1.34 g, 8.62 mmole) in methylene chloride (10 mL) over a period of 10 minutes. The reaction mixture was stirred at ambient temperature for 18 hrs. The solvent was evaporated and the resulting solid was purified on silica (Biotage) using DCM to 30% ethyl acetate in DCM as eluant. The fractions containing the product were evaporated in vacuo to furnish a yellow solid (2.7 g, 96%). LCMS m/z (%)=404 (M+H, 100),¹H NMR (Bruker, 400 MHz, DMSO-d₆) δ: 8.91 (bs, 1H), 8.41 (bs, 1H), 8.06-8.12 (m, 1H), 7.46-7.48 (d, J=8.68 Hz 1H), 7.42 (bs, 1H), 7.29-7.35 (m, 1H), 7.01-7.08 (m, 2H), 5.5 (bs, 1H), 3.78(s, 3H), 3.27 (bs, 4H), 1.13-1.2 (t, J=7.01 Hz, 6H).
• Step 5: Preparation of 1-(2,4-Difluoro-phenyl)-3-14-methoxy-3-(2H-pyrazol-3-yl)-phenyl]-urea
• To a solution of 1-[3-(3-Diethylamino-acryloyl)-4-methoxy-phenyl]-3-(2,4-difluoro-phenyl)-urea (1.5 g, 3.72 mmole) in methanol/acetic acid (50 mL/2.0 mL) mixture was added hydrazine (0.82 g, 37.22 mmole). The reaction mixture was refluxed at 55 C for 20 hrs. The methanol/acetic acid was evaporated from the reaction mixture and the solid was triturated with ether/methanol. The solid was filtered and washed with ether. Next, the solid was dried in vacuo to furnish a colorless solid (1.0 g, 76%). LCMS m/z (%)=345 (M+H, 100),¹H NMR (Bruker, 400 MHz, DMSO-d₆) δ: 13.0 (bs, 1H), 8.89 (bs, 1H), 8.37 (bs, 1H), 8.09-810 (d, J=6.05 Hz, 1H), 7.74-7.97 (bs, 1H), 7.52-7.64 (bs, 1H), 7.39-7.40 (d, J=5.94 Hz, 1H), 7.27-7.32 (m, 2H), 7.01-7.09 (m, 2H), 6.73 (s, 1H), 3.82 (major tautomer).
• Step 6: Preparation of 1-[3-(4-Bromo-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2,4-difluoro-phenyl)-urea
• To a cooled and stirred solution of 1-(2,4-Difluoro-phenyl)-3-[4-methoxy-3-(2H-pyrazol-3-yl)-phenyl]-urea (0.6 g, 1.74 mmole) in DMF (15 mL) was added N-bromosuccinimide (0.37 g, 2.09 mmole) over a period of 15 minutes. The reaction mixture was warmed slowly to ambient temperature and stirred for another 2 hrs. The reaction mixture was poured into well-stirred ice water containing NaHCO₃/Na₂S₂O₃. The resulting solid was filtered and washed with ice water (50 mL). The solid was dried in vacuo to afford off-white solid (0.68g, 92%). LCMS m/z (%)=425 (M+H,⁷⁹Br, 100), 427 (M+H,⁸¹Br, 99).¹H NMR (Bruker, 400 MHz, DMSO-d₆) δ: 8.96 (bs, IH), 8.44 (bs, 1H), 8.02-8.08 (m, 1H), 7.48 (bs, 2H), 7.27-7.32 (m, 1h), 6.99-7.08 (m, 2H), 3.73 (s, 3H) (major tautomer).
Example 2
• A. Construction of Constitutively Active 5-HT_2CReceptor cDNA
• 1. Endogenous Human 5-HT_2C
• The cDNA encoding endogenous human 5-HT₂c receptor was obtained from human brain poly-A⁺RNA by RT-PCR. The 5′ and 3′ primers were derived from the 5′ and 3′ untranslated regions and contained the following sequences:

  5′-GACCTCGAGGTTGCTTAAGACTGAAGCA-3′	(SEQ.ID.NO.: 1)
  5′-ATTTCTAGACATATGTAGCTTGTACCGT-3′	(SEQ.ID.NO.: 2)

  
  PCR was performed using either TaqPlus™ precision polymerase (Stratagene) or rTth™ polymerase (Perkin Elmer) with the buffer systems provided by the manufacturers, 0.25 μM of each primer, and 0.2 mM of each of the four (4) nucleotides. The cycle condition was 30 cycles of 94° C. for 1 minute, 57° C. for 1 minute and 72° C. for 2 minutes. The 1.5 kb PCR fragment was digested with Xho I and Xba I and subcloned into the Sal I-Xba I site of pBluescript.
• The derived cDNA clones were fully sequenced and found to correspond to published sequences.
• 2. AP-1 cDNA
• The cDNA containing a S310K mutation (AP-1 cDNA) in the third intracellular loop of the human 5-HT_2Creceptor was constructed by replacing the Sty I restriction fragment containing amino acid 310 with synthetic double stranded oligonucleotides encoding the desired mutation. The sense strand sequence utilized had the following sequence:

  (SEQ.ID.NO: 3)

  5′-CTAGGGGCACCATGCAGGCTATCAACAATGAAAGAAAAGCTAAGAAA
  GTC-3′

• and the antisense strand sequence utilized had the following sequence:

  (SEQ.ID.NO: 4)

  5′-CAAGGACTTTCTTAGCTTTTCTTTCATTGTTGATAGCCTGCATGGTG
  CCC-3′.

  
  B. Construction of Constitutively Active 5-HT_2AReceptor cDNA
• 1. Human 5-HT_2A(C322K; AP-2)
• The cDNA containing the point mutation C322K in the third intracellular loop was constructed by using the Sph I restriction enzyme site, which encompasses amino acid 322. For the PCR procedure, a primer containing the C322K mutation:

  (SEQ.ID.NO: 5)

  5′-CAAAGAAAGTACTGGGCATCGTCTTCTTCCT-3′

• was used along with the primer from the 3′ untranslated region SEQ.ID.NO:6.

  	5′-TGCTCTAGATTCCAGATAGGTGAAAA	(SEQ.ID.NO: 6)
  	CTTG-3′

  
  The resulting PCR fragment was then used to replace the 3′ end of the wild type 5-HT_2AcDNA by the T4 polymerase blunted Sph I site. PCR was performed using pfu polymerase (Stratagene) with the buffer system provided by the manufacturer and 10% DMSO, 0.25 mM of each primer, 0.5 mM of each of the 4 nucleotides. The cycle conditions were 25 cycles of 94° C. for 1 minute, 60° C. for 1 minute, and 72° C. for 1 minute.
• 2. AP-3 cDNA
• The human 5-HT_2AcDNA with intracellular loop 3 (IC3) or IC3 and cytoplasmic tail replaced by the corresponding human 5-HT_2CcDNA was constructed using PCR-based mutagenesis.
• (a) Replacement of IC3 Loop
• The IC3 loop of human 5-HT_2AcDNA was first replaced with the corresponding human 5-HT_2CcDNA. Two separate PCR procedures were performed to generate the two fragments, Fragment A and Fragment B, that fuse the 5-HT_2CIC3 loop to the transmembrane 6 (TM6) of 5-HT_2A. The 237 bp fragment, Fragment A, containing 5-HT_2CIC3 and the initial 13 bp of 5-HT_2ATM6 was amplified by using the following primers:

  	(SEQ.ID.NO: 7)

  	5′-CCGCTCGAGTACTGCGCCGACAAGCTTTGAT-3′

  (SEQ.ID.NO: 8)

  5′-CGATGCCCAGCACTTTCGAAGCTTTTCTTTCATTGTTG-3′

  
  The template used was human 5-HT_2CcDNA.
• The 529 bp PCR fragment, Fragment B, containing the C-terminal 13 bp of IC3 from 5-HT_2Cand the C-terminal of 5-HT_2Astarting at beginning of TM6, was amplified by using the following primers:

  	(SEQ.ID.NO: 9)

  	5′-AAAAGCTTCGAAAGTGCTGGGCATCGTCTTCTTCCT-3′

  (SEQ.ID.NO: 10)

  5′-TGCTCTAGATTCCAGATAGGTGAAAACTTG-3′

  
  The template used was human 5-HT_2AcDNA.
• Second round PCR was performed using Fragment A and Fragment B as co-templates with SEQ.ID.NO:7 and SEQ.ID.NO:10 (it is noted that the sequences for SEQ.ID.NOS.: 6 and 10 are the same) as primers. The resulting 740 bp PCR fragment, Fragment C, contained the IC3 loop of human 5-H_2Cfused to TM6 through the end of the cytoplasmic tail of human 5-HT_2A. PCR was performed using pft™ polymerase (Stratagene) with the buffer system provided by the manufacturer, and 10% DMSO, 0.25 mM of each primer, and 0.5 mM of each of the four (4) nucleotides. The cycle conditions were 25 cycles of 94° C. for 1 minute, 57° C. (1 st round PCR) or 60° C. (2nd round PCR) for 1 minute, and 72° C. for 1 minute (1st round PCR) or 90 seconds (2nd round PCR).
• To generate a PCR fragment containing a fusion junction between the human⁵-HT_2ATM5 and the IC3 loop of 5-HT_2C, four (4) primers were used. The two external primers, derived from human 5-HT_2A, had the following sequences:

  	5′-CGTGTCTCTCCTTACTTCA-3′	(SEQ.ID.NO.: 11)

• The other primer used was SEQ.ID.NO.:6 (see note above regarding SEQ.ID.NOS. 6 and 11). The first internal primer utilized was an antisense strand containing the initial 13 bp of IC3 of 5-HT_2Cfollowed by the terminal 23 bp derived from TM5 of 5-HT_2A:

  	(SEQ.ID.NO.: 12)

  5′-TCGGCGCAGTACTTTGATAGTTAGAAAGTAGGTGAT-3′

• The second internal primer was a sense strand containing the terminal 14 bp derived from TM5 of 5-HT_2Afollowed by the initial 24 bp derived from IC3 of 5-HT_2C:

  	(SEQ.ID.NO.: 13)

  5′-TTCTAACTATCAAAGTACTGCGCCGACAAGCTTTGATG-3′.

• PCR was performed using endogenous human 5-HT_2Aand a co-template, Fragment C, in a 50 mL reaction volume containing 1× pfu buffer, 10% DMSO, 0.5 mM of each of the four (4) nucleotides, 0.25 mM of each external primer (SEQ.ID.NOS. 10 and 11), 0.06 mM of each internal primer (SEQ.ID.NOS. 12 and 13) and 1.9 units of pfu polymerase (Stratagene). The cycle conditions were 25 cycles of 94° C. for 1 minute, 52° C. for 1 minute, and 72° C. for 2 minutes and 10 seconds. The 1.3 kb PCR product was then gel purified and digested with Pst I and EcoR I. The resulting 1 kb Pst I-EcoR I fragment was used to replace the corresponding fragment in the endogenous human 5-HT_2Asequence to generate the mutant 5-HT_2Asequence encoding the IC3 loop of 5-HT2C.
• (b) Replacement of the Cytoplasmic tail
• To replace the cytoplasmic tail of 5-HT_2Awith that of 5-HT_2C, PCR was performed using a sense primer containing the C-terminal 22 bp of TM7 of endogenous human 5-HT_2Afollowed by the initial 21 bp of the cytoplasmic tail of endogenous human 5-HT_2C:

  (SEQ.ID.NO: 14)

  5′-TTCAGCAGTCAACCCACTAGTCTATACTCTGTTCAACAAAATT-3′

• The antisense primer was derived from the 3′ untranslated region of endogenous human 5-HT_2C:

  5′-	(SEQ.ID.NO: 15)
  ATTTCTAGACATATGTAGCTTGTACCGT-3′.

• The resulting PCR fragment, Fragment D, contained the last 22 bp of endogenous human 5-HT_2ATM7 fused to the cytoplasmic tail of endogenous human 5-HT_2C. Second round PCR was performed using Fragment D and the co-template was endogenous human 5-HT_2Athat was previously digested withAcc 1 to avoid undesired amplification. The antisense primer used was SEQ.ID.NO:15 (the sequences for SEQ.ID.NOS. 15 and 2 are the same) and the sense primer used was derived from endogenous human 5-HT_2A:

  	5′-ATCACCTACTTTCTAACTA-3′.	(SEQ.ID.NO: 16)

• PCR conditions were as set forth in Example 2 section B2(a) for the first round PCR, except that the annealing temperature was 48° C. and the extension time was 90 seconds. The resulting 710 bp PCR product was digested with Apa I and Xba I and used to replace the corresponding Apa I-Xba I fragment of either (a) endogenous human 5-HT_2A, or (b) 5-HT_2Awith 2C IC₃to generate (a) endogenous human 5-HT_2Awith endogenous human 5-HT_2Ccytoplasmic tail and (b) AP-3, respectively.
• 4. AP-4 cDNA
• This mutant was created by replacement of the region of endogenous human 5-HT_2Afrom amino acid 247, the middle of TM5 right after Pro²⁴⁶, to amino acid 337, the middle of TM6 just before Pro³³⁸, by the corresponding region of AP-I cDNA. For convenience, the junction in TM5 is referred to as the “2A-2C junction,” and the junction in TM6 is referred to as the “2C-2A junction.”
• Three PCR fragments containing the desired hybrid junctions were generated. The 5′ fragment of 561 bp containing the 2A-2C junction in TM5 was generated by PCR using endogenous human 5-HT_2Aas template, SEQ.ID.NO.:11 as the sense primer, and the antisense primer was derived from 13 bp of 5-HT_2Cfollowed by 20 bp of 5-HT_2Asequence:

  5′-	(SEQ.ID.NO: 17)
  CCATAATCGTCAGGGGAATGAAAAATGACACAA-
  3′

• The middle fragment of the 323 bp contains endogenous human 5-HT_2Csequence derived from the middle of TM5 to the middle of TM6, flanked by 13 bp of 5-HT_2Asequences from the 2A-2C junction and the 2C-2A junction. This middle fragment was generated by using AP-1 cDNA as a template, a sense primer containing 13 bp of 5-HT_2Afollowed by 20 bp of 5-HT_2Csequences across the 2A-2C junction and having the sequence:

  	(SEQ.ID.NO: 18)

  5′-ATTTTTCATTCCCCTGACGATTATGGTGATTAC-3′;

• and an antisense primer containing 13 bp of 5-HT_2Afollowed by 20 bp of 5-HT_2Csequences across the 2C-2A junction and having the sequence:

  	(SEQ.ID.NO: 19)

  5′-TGATGAAGAAAGGGCACCACATGATCAGAAACA-3′.

• The 3 ′ fragment of 487 bp containing the 2C-2A junction was generated by PCR using endogenous human 5-HT_2Aas a template and a sense primer having the following sequence from the 2C-2A junction:

  	(SEQ.ID.NO: 20)

  5′-GATCATGTGGTGCCCTTTCTTCATCACAAACAT-3′

  
  and the antisense primer was SEQ.ID.NO:6 (see note above regarding SEQ.ID.NOS. 6 and 10).
• Two second round PCR reactions were performed separately to link the 5′ and middle fragment (5′M PCR) and the middle and 3′ fragment (M3′ PCR). The 5′M PCR co-template used was the 5′ and middle PCR fragment as described above, the sense primer was SEQ.ID.NO:11 and the antisense primer was SEQ.ID.NO.:19. The 5′M PCR procedure resulted in an 857 bp PCR fragment.
• The M3′ PCR used the middle and M3′ PCR fragment described above as the co-template, SEQ.ID.NO.: 18 as the sense primer and SEQ.ID.NO.:6 (see note above regarding SEQ.ID.NOS. 6 and 10) as the antisense primer, and generated a 784 bp amplification product. The final round of PCR was performed using the 857 bp and 784 bp fragments from the second round PCR as the co-template, and SEQ.ID.NO:11 and SEQ.ID.NO: 6 (see note above regarding SEQ.ID.NOS. 6 and 10) as the sense and the antisense primer, respectively. The 1.32 kb amplification product from the final round of PCR was digested with Pst I and Eco RI. Then resulting 1 kb Pst I-Eco RI fragment was used to replace the corresponding fragment of the endogenous human 5-HT_2Ato generate mutant 5-HT_2Awith 5-HT_2C: S310K/IC3. The Apa I-Xba fragment of AP3 was used to replace the corresponding fragment in mutant 5-HT_2Awith 5-HT_2C: S310K/IC3 to generate AP4.
Example 3
• Receptor Expression:
• A. pCMV
• Although a variety of expression vectors are available to those in the art, for purposes of utilization for both the endogenous and non-endogenous receptors discussed herein, it is most preferred that the vector utilized be pCMV. This vector was deposited with the American Type Culture Collection (ATCC) on Oct. 13, 1998 (10801 University Blvd., Manassas, Va. 20110-2209 USA) under the provisions of the Budapest Treaty for the International Recognition of the Deposit of Microorganisms for the Purpose of Patent Procedure. The DNA was tested by the ATCC and determined to be viable. The ATCC has assigned the following deposit number to pCMV: ATCC #203351. SeeFIG. 8.
• B. Transfection Procedure
• For the generic assay ([³⁵S]GTPγS; Example 4) and the antagonist binding assay (mesulergine; Example 15), transfection of COS-7 or 293T cells was accomplished using the following protocol.
• On day one, 5×10⁶COS-7 cells or 1×10⁷293T cells per 150 mm plate were plated out. On day two, two reaction tubes were prepared (the proportions to follow for each tube are per plate): tube A was prepared by mixing 20 μg DNA (e.g., pCMV vector; pCMV vector AP-1 cDNA, etc.) in 1.2 ml serum free DMEM (Irvine Scientific, Irvine, Calif.); tube B was prepared by mixing 120 μl lipofectamine (Gibco BRL) in 1.2 ml serum free DMEM. Tubes A and B were then admixed by inversions (several times), followed by incubation at room temperature for 30-45 min. The admixture is referred to as the “transfection mixture”. Plated COS-7 cells were washed with 1× PBS, followed by addition of 10 ml serum free DMEM. 2.4 ml of the transfection mixture was then added to the cells, followed by incubation for 4 hrs at 37° C./5% CO₂. The transfection mixture was then removed by aspiration, followed by the addition of 25 ml of DMEM/10% Fetal Bovine Serum. Cells were then incubated at 37° C./5% CO₂. After 72 hr incubation, cells were then harvested and utilized for analysis.
Example 4
• GTP Membrane Binding Scintillation Proximity Assay
• The advantages of using [³⁵S]GTPγS binding to measure constitutive activation are that: (a) [³⁵S]GTPγS binding is generically applicable to all G protein-coupled receptors; and (b) [³⁵S]GTPγS binding is proximal at the membrane surface, thereby making it less likely to pick-up molecules which affect the intracellular cascade. The assay utilizes the ability of G protein-coupled receptors to stimulate [³⁵S]GTPγS binding to membranes expressing the relevant receptors. Therefore, the assay may be used to directly screen compounds at the disclosed serotonin receptors.
• FIG. 9 demonstrates the utility of a scintillation proximity assay to monitor the binding of [³⁵S]GTPγS to membranes expressing, e.g., the endogenous human 5-HT_2Creceptor expressed in COS cells. In brief, a preferred protocol for the assay is such that the assay was incubated in 20 mM HEPES, pH 7.4, binding buffer with 0.3 nM [³⁵S]GTPγS and 12.5 μg membrane protein and 1 μM GDP for 30 minute Wheatgerm agglutinin beads (25 μl; Amersham) were then added and the mixture was incubated for another 30 minutes at room temperature. The tubes were then centrifuged at 1500×g for 5 minutes at room temperature and then counted in a scintillation counter. As shown inFIG. 9, serotonin, which as the endogenous ligand activates the 5-HT_2Creceptor, stimulated [³⁵S]GTPγS binding to the membranes in a concentration dependant manner. The stimulated binding was completely inhibited by 30 μM mianserin, a compound considered as a classical 5-HT_2Cantagonist, but also known as a 5-HT_2Cinverse agonist.
• Although this assay measures agonist-induced binding of [³⁵S]GTPγS to membranes and can be routinely used to measure constitutive activity of receptors, the present cost of wheatgerm agglutinin beads may be prohibitive. A less costly but equally applicable alternative also meets the needs of large-scale screening. Flash plates and Wallac™ scintistrips may be used to format a high throughput [³⁵S]GTPγS binding assay. This technique allows one to monitor the tritiated ligand binding to the receptor while simultaneously monitoring the efficacy via [³⁵S]GTPγS binding. This is possible because the Wallac™ beta counter can switch energy windows to analyze both tritium and³⁵S-labeled probes.
• Also, this assay may be used for detecting of other types of membrane activation events that result in receptor activation. For example, the assay may be used to monitor³²p phosphorylation of a variety of receptors (including G protein-coupled and tyrosine kinase receptors). When the membranes are centrifuged to the bottom of the well, the bound [³⁵S]GTPγS or the³²P-phosphorylated receptor will activate the scintillant coated on the wells. Use of Scinti® strips (Wallac™) demonstrate this principle. Additionally, this assay may be used for measuring ligand binding to receptors using radiolabeled ligands. In a similar manner, the radiolabeled bound ligand is centrifuged to the bottom of the well and activates the scintillant. The [³⁵S]GTPγS assay results parallel the results obtained in traditional second messenger assays of receptors.
• As shown inFIG. 10, serotonin stimulates the binding of [³⁵S]GTPγS to the endogenous human 5-HT_2Creceptor, while mianserin inhibits this response; furthermore, mianserin acts as a partial inverse agonist by inhibiting the basal constitutive binding of [³⁵S]GTPγS to membranes expressing the endogenous human 5-HT_2Creceptor. As expected, there is no agonist response in the absence of GDP since there is no GDP present to exchange for [³⁵S]GTPγS. Not only does this assay system demonstrate the response of the native 5HT_2Creceptor, but it also measures the constitutive activation of other receptors.
• FIG. 11A andFIG. 11B demonstrate the enhanced binding of [³⁵S]GTPγS to membranes prepared from 293T cells expressing the control vector alone, the native human 5-HT_2Creceptor or the AP-1 receptor was observed (data not shown). The total protein concentration used in the assay affects the total amount of [³⁵S]GTPγS binding for each receptor. The c.p.m. differential between the CMV transfected and the constitutively active mutant receptor increased from approximately 1000 c.p.m at 10 μg/well to approximately 6-8000 c.p.m. at 75 μg/well protein concentration, as shown inFIG. 11.
• The AP-1 receptor showed the highest level of constitutive activation followed by the wild type receptor, which also showed enhanced [³⁵S]GTPγS binding above basal. This is consistent with the ability of the endogenous human 5-HT_2Creceptor to accumulate intracellular IP₃in the absence of 5HT stimulation (Example 6) and is also consistent with published data claiming that the endogenous human 5-HT_2Creceptor has a high natural basal activity. Therefore, the AP-1 receptor demonstrates that constitutive activity may be measured by proximal [³⁵S]GTPγS binding events at the membrane interface.
Example 5
• Serotonin Receptor Agonist/Antagonist Competitive Binding Assay:
• Membranes were prepared from transfected COS-7 cells (see Example 3) by homogenization in 20 mM HEPES and 10 mM EDTA, pH 7.4 and centrifuged at 49,000×g for 15 min. The pellet was resuspended in 20 mM HEPES and 0.1 mM EDTA, pH 7.4, homogenized for 10 sec. using a Polytron homogenizer (Brinkman) at 5000 rpm and centrifuged at 49,000×g for 15 min. The final pellet was resuspended in 20 mM HEPES and 10 mM MgCl₂, pH 7.4, homogenized for 10 sec. using polytron homogenizer (Brinkman) at 5000 rpm.
• Assays were performed in triplicate 200 μl volumes in 96 well plates. Assay buffer (20 mM HEPES and 10 mM MgCl₂, pH 7.4) was used to dilute membranes,³H-LSD,³H-mesulergine, serotonin (used to define non-specific for LSD binding) and mianserin (used to define non-specific for mesulergine binding). Final assay concentrations consisted of 1 nM³H-LSD or 1 nM³H-mesulergine, 50 μg membrane protein and 100 μm serotonin or mianserin. LSD assays were incubated for 1 hr at 37° C., while mesulergine assays were incubated for 1 hr at room temperature. Assays were terminated by rapid filtration onto Wallac Filtermat Type B with ice cold binding buffer using Skatron cell harvester. The radioactivity was determined in a Wallac 1205 BetaPlate counter.
Example 6
• Intracellular IP₃Accumulation Assay:
• For the IP₃accumulation assay, a transfection protocol different from the protocol set forth in Example 3 was utilized. In the following example, the protocols used for days 1-3 were slightly different for the data generated forFIGS. 12 and 14 and forFIGS. 13 and 15; the protocol for day 4 was the same for all conditions.
• A. COS-7 and 293 Cells
• On day one, COS-7 cells or 293 cells were plated onto 24 well plates, usually 1×10⁵cells/well or 2×10⁵cells/well, respectively. On day two, the cells were transfected by first mixing 0.25 ug DNA (see Example 3) in 50 μl serum-free DMEM/well and then 2 μl lipofectamine in 50 μl serum-free DMEM/well. The solutions (“transfection media”) were gently mixed and incubated for 15-30 minutes at room temperature. The cells were washed with 0.5 ml PBS and then 400 μl of serum free media was mixed with the transfection media and added to the cells. The cells were then incubated for 3-4 hours at 37° C./5% CO₂. Then the transfection media was removed and replaced with I ml/well of regular growth media. Onday 3, the media was removed and the cells were washed with 5 ml PBS followed by aspiration. Then 2 ml of trypsin (0.05%) is added per plate. After 20-30 seconds, warm 293 media is added to plates, cells are gently resupended, and cells are counted. Then a total of 55,000 cells are added to sterile poly-D-lysine treated 96 well microtiter plates and cells are allowed to attach over a six-hour incubation in an incubator. Then media is aspirated and 0.1 mL inositol-free/serum-free media (GIBCO BRL) was added to each well with 0.25 μCi of³H-myo-inositol/well and the cells were incubated for 16-18 hours overnight at 37° C./5% CO₂. Protocol A.
• B. 293 Cells
• On day one, 13×10⁶293 cells per 150 mm plate were plated out. On day two, 2 ml of serum OptimemI (Invitrogen Corporation) is added per plate followed by addition of 60 μL of lipofectamine and 16 μg of cDNA. Note that lipofectamine must be added to the OptimemI and mixed well before addition of cDNA. While complexes between lipofectamine and the cDNA are forming, media is carefully aspirated and cells are gently rinsed with 5 ml of OptimemI media followed by careful aspiration. Then 12 ml of OptimemI is added to each plate and 2 ml of transfection solution is added followed by a 5 hour incubation at 37° C. in a 5% CO₂incubator. Plates are then carefully aspirated and 25 mL of Complete Media are added to each plate and cells are then incubated until used. Onday 3, cells are trypsinized with 2 ml of 0.05% trypsin for 20-30 seconds followed by addition of 10 mL of warmed media, gently titurated to dissociate cells, and then 13 additional ml of warmed media is gently added. Cells are then counted and then 55,000 cells are added to 96-well sterile poly-D-lysine trated plates. Cells are allowed to attach over a six hour incubation at 37° C. in a 5% CO₂incubator. Media is then carefully aspirated and 100 μL of warm inositol-free media plus 0.5 μCi³H-inositol is added to each well and the plates are incubated for 18-20 hours at 37° C. in a 5% CO₂incubator.
• On day 4, media is carefully aspirated and then 0.1 ml of assay medium is added containing inositol-free/serum free media, 10 μM pargyline, 10 mM lithium chloride, and test compound at indicated concentrations. The plates were then incubated for three hours at 37° C. and then wells are carefully aspirated. Then 200 μL of ice-cold 0.1 M formic acid is added to each well. Plates can then be frozen at this point at −80° C. until further processed. Frozen plates are then thawed over the course of one hour, and the contents of the wells (approximately 220 μL) are placed over 400 μL of washed ion-exchange resin (AG 1-X8) contained in a Multi Screen Filtration plate and incubated for 10 minutes followed by filtration under vacuum pressure. Resin is then washed nine times with 200 μL of water and then tritiated inositol phosphates are eluted into a collecting plate by the addition of 200 ul of 1M ammonium formate and an additonal 10 minute incubation. The elutant is then transferred to 20 ml scintillation vials, 8 mL of SuperMix or Hi-Safe scintillation cocktails is added, and vials are counted for 0.5-1 minutes in a Wallac 1414 scintilation counter.
• FIG. 12 is an illustration of IP3 production from the human 5-HT_2Areceptor which was mutated using the same point mutation as set forth in Casey, which rendered the rat receptor constitutively active. The results represented inFIG. 12, support the position that when the point mutation shown to activate the rat receptor is introduced into the human receptor, little activation of the receptor is obtained that would allow for appropriate screening of candidate compounds, with the response being only moderately above that of the endogenous human 5-HT_2Areceptor. Generally, a response of at least 2× above that of the endogenous response is preferred.
• FIG. 13 provides an illustration comparing IP3 production from endogenous 5-HT_2Areceptor and the AP4 mutation. The results illustrated inFIG. 13 support the position that when the novel mutation disclosed herein is utilized, a robust response of constitutive IP3 accumulation is obtained (e.g., over 2× that of the endogenous receptor).
• FIG. 14 provides an illustration of IP3 production from AP3. The results illustrated inFIG. 14 support the position that when the novel mutation disclosed herein is utilized, a robust response of constitutive IP3 accumulation is obtained.
• FIG. 15 provides bar-graph comparisons of IP3 accumulation between endogenous human 5-HT_2Creceptor and AP-1. Note that the endogenous receptor has a high degree of natural constitutive activity relative to the control CMV transfected cells (i.e., the endogenous receptor appears to be constitutively activated).
Example 7In vitro Binding of 5HT_2AReceptor
• Animals:
• Animals (Sprague-Dawley rats) were sacrificed and brains were rapidly dissected and frozen in isopentane maintained at −42° C. Horizontal sections were prepared on a cryostat and maintained at −20° C.
• LSD Displacement Protocol:
• Lysergic acid diethylamide (LSD) is a potent 5HT_2Areceptor and dopamine D2 receptor ligand. An indication of the selectivity of compounds for either or both of these receptors involves displacement of radiolabeled-bound LSD from pre-treated brain sections. For these studies, radiolabeled¹²⁵1-LSD (NEN Life Sciences, Boston, Mass., Catalogue number NEX-199) was utilized; spiperone (RBI, Natick, Mass. Catalogue number s-128) a 5HT_2Areceptor and dopamine D2 receptor antagonist, was also utilized. Buffer consisted of 50 nanomolar TRIS-HCl, pH 7.4.
• Brain sections were incubated in (a)Buffer plus 1 nanomolar¹²⁵1-LSD; (b)Buffer plus 1 nanomolar¹²⁵1-LSD and 1 micromolar spiperone; or Buffer plus I nanomolar¹²⁵1-LSD and 1micromolar Compound 1 for 30 minutes at room temperature. Sections were then washed 2×10 minutes at 4° C. in Buffer, followed by 20 seconds in distilled H₂O. Slides were then air-dried.
• After drying, sections were apposed to x-ray film (Kodak Hyperfilm) and exposed for 4 days.
• Analysis:
• FIGS.16A-C provide grey-scale representative autoradiographic sections from this study.FIG. 16A evidences darker bands (derived from¹²⁵1-LSD binding) primarily in both the fourth layer of the cerebral cortex (primarily SHT_2Areceptors), and the caudate nucleus (primarily dopamine D2 receptors and some SHT_2Areceptors). As can be seen fromFIG. 16B, spiperone, which is a 5HT_2Aand dopamine D2 antagonist, displaces the¹²⁵-LSD from these receptors on both the cortex and the caudate. As can be further seen fromFIG. 16C, Compound S-1610, [3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-phenyl]-carbamic acid 4-methoxy-phenyl ester, appears to selectively displace the¹²⁵I-LSD from the cortex (5HT_2A) and not the caudate (dopamine D2).
Example 7
• Screening Compounds Known to Have 5-HT_2CAntagonist Activity Against Non-Endogenous, Constitutively Activated Human Serotonin Receptor: AP-1
• A final concentration of 12.5 μg membranes prepared from COS7 cells (see Example 3) transiently expressing constitutively active mutant human 5HT_2Creceptor AP-1 were incubated with binding buffer (20 mM HEPES, pH 7.4, 100 mM NaCl, 20 mM MgCl₂.6H₂O, 0.2% saponin, and 0.2 mM ascobate), GDP(1 μM) and compound in a 96-well plate format for a period of 60 minutes at ambient room temperature. Plates were then centrifuged at 4,000 rpm for 15 minutes followed by aspiration of the reaction mixture and counting for 1 minute in a Wallac™ MicroBeta plate scintillation counter. A series of compounds known to possess reported 5HT_2Cantagonist activity were determined to be active in the [³⁵S]GTPγS binding assay using AP-1. IC₅₀determinations were made for these commercially available compounds (RBI, Natick, Mass.). Results are summarized in TABLE 5. For each determination, eight concentrations of test compounds were tested in triplicate. The negative control in these experiments consisted of AP-1 receptor without test compound addition, and the positive control consisted of 12.5 μg/well of COS7 cell membranes expressing the CMV promoter without expressed AP-1 receptor.

  TABLE 5
  		IC50(nM) in GTP-γ-[35S]
  Test Compound	Known Pharmacology	Assay

  Metergoline	5HT2/lC antagonist	32.0
  Mesulergine	5HT2/lC antagonist	21.2
  Methysergide	5HT2/lC antagonist	6.1
  Methiothepin	5HT1 antagonist	20.4
  Normethylclozapin	5HT2/lC antagonist	21.4
  Fluoxetine	5HT reuptake inhibitor	114.0
  Ritanserin	5HT2/lC antagonist	19.4

  
  The IC₅₀results confirm that the seven tested compounds showed antagonist activity at the AP-1 receptor.
Example 8
• Receptor Binding Assay
• In addition to the methods described herein, another means for evaluating a test compound is by determining binding affinities to the 5-HT_2Areceptor. This type of assay generally requires a radiolabelled ligand to the 5-HT_2Areceptor. Absent the use of known ligands for the 5-HT_2Areceptor and radiolabels thereof, compounds of the present invention can be labelled with a radioisotope and used in an assay for evaluating the affinity of a test compound to the 5-HT_2Areceptor.
• A radiolabelled 5-HT_2Acompound of Formula (I) can be used in a screening assay to identify/evaluate compounds. In general terms, a newly synthesized or identified compound (i.e., test compound) can be evaluated for its ability to reduce binding of the “radiolabelled compound of Formula (I)” to the 5-HT_2Areceptor. Accordingly, the ability to compete with the “radiolabelled compound of Formula (I)” or Radiolabelled 5-HT_2ALigand for the binding to the 5-HT_2Areceptor directly correlates to its binding affinity of the test compound to the 5-HT_2Areceptor.
• Assay Protocol for Determining Receptor Binding for 5-HT_2A:
• A. 5-HT_2AReceptor Preparation
• 293 cells (human kidney, ATCC), transiently transfected with 10 [g human 5-HT_2Areceptor and 60 ul Lipofectamine (per 15-cm dish), are grown in the dish for 24 hours (75% confluency) with a media change and removed with 10 ml/dish of Hepes-EDTA buffer (20 mM Hepes+10 mM EDTA, pH 7.4). The cells are then centrifuged in a Beckman Coulter centrifuge for 20 minutes, 17,000 rpm (JA-25.50 rotor). Subsequently, the pellet is resuspended in 20 mM Hepes+1 mM EDTA, pH 7.4 and homogenized with a 50-ml Dounce homogenizer and again centrifuged. After removing the supernatant, the pellets are stored at −80° C., until used in binding assay. When used in the assay, membranes are thawed on ice for 20 minutes and then 10 mL of incubation buffer (20 mM Hepes, 1 mM MgCl₂, 100 mM NaCl, pH 7.4) added. The membranes are then vortexed to resuspend the crude membrane pellet and homogenized with a Brinkmann PT-3 100 Polytron homogenizer for 15 seconds at setting 6. The concentration of membrane protein is determined using the BRL Bradford protein assay.
• B. Binding Assay
• For total binding, a total volume of 50 ul of appropriately diluted membranes (diluted in assay buffer containing 50 mM Tris HCl (pH 7.4), 10 mM MgCl₂, and 1 mM EDTA; 5-50 μg protein) is added to 96-well polyproylene microtiter plates followed by addition of 100 μl of assay buffer and 50 μl of Radiolabelled 5-HT_2ALigand. For nonspecific binding, 50 μl of assay buffer is added instead of 100 μl and an additional 50 μl of 10 μM cold 5-HT_2Ais added before 50 μl of Radiolabelled 5-HT_2ALigand is added. Plates are then incubated at room temperature for 60-120 minutes. The binding reaction is terminated by filtering assay plates throh a Microplate Devices GF/C Unifilter filtration plate with a Brandell 96-well plate harvestor followed by washing with cold 50 mM Tris HCl, pH 7.4 containing 0.9% NaCl. Then, the bottom of the filtration plate are sealed, 50 μl of Optiphase Supermix is added to each well, the top of the plates are sealed, and plates are counted in a Trilux MicroBeta scintillation counter. For compound competition studies, instead of adding 100 μl of assay buffer, 100 μl of appropriately diluted test compound is added to appropriate wells followed by addition of 50 μl of Radiolabelled 5-HT_2ALigand.
• C. Calculations
• The test compounds are initially assayed at 1 and 0.1 μM and then at a range of concentrations chosen such that the middle dose would cause about 50% inhibition of a Radio-5-HT_2ALigand binding (i.e., IC₅₀). Specific binding in the absence of test compound (B_O) is the difference of total binding (B_T) minus non-specific binding (NSB) and similarly specific binding (in the presence of test compound) (B) is the difference of displacement binding (B_D) minus non-specific binding (NSB). IC₅₀is determined from an inhibition response curve, logit-log plot of % B/B_Ovs concentration of test compound.
• K_iis calculated, for example, by the Cheng and Prustoff transformation:
  K_i=IC₅₀/(1+[L]/K_D)
• where [L] is the concentration of a Radio-5-HT_2ALigand used in the assay and K_Dis the dissociation constant of a Radio-5-HT_2ALigand determined independently under the same binding conditions.
Example 9
• Activity Of Compounds Of The Present Invention in the IP₃Accumulation Assay:
• Certain compounds of the present invention and their corresponding activities in the IP Accumulation Assay are shown in TABLE 6.

  	TABLE 6
  		5-HT2A(IC50)*
  	Compound No.	IP3Accumulation Assay (nM)

  	20	0.45
  	60	1.10
  	61	8.57
  	79	13.0
  	84	12.2
  	*Reported values are averages of at least two trials.

• The majority of the other compounds of the Examples were tested at least once and they showed IC₅₀activities in the 5-HT_2AIP₃Accumulation Assay of at least about 10 μM.
Example 10
• Efficacy of Compounds of the Invention in the Attenuation of DOI-Induced Hypolocomotion in Rats.
• In this example, compounds of the invention, such asCompound 1 andCompound 26, were tested for inverse agonist activity by determining whether these compounds could attenuate DOI-induced hypolocomotion in rats in a novel environment. DOI is a potent 5HT2A/2C receptor agonist that crosses the blood-brain barrier.
• Animals:
• Male Sprague-Dawley rats (Harlan, San Diego, Calif.) weighing between 200-300 g were used for all tests. Rats were housed three to four per cage. These rats were naïve to experimental testing and drug treatment. Rats were handled one to three days before testing to acclimate them to experimental manipulation. Rats were fasted overnight prior to testing.
• Compounds:
• (R)-DOI HCl (C₁₁H₁₆INO₂HCl) was obtained from Sigma-Aldrich, and was dissolved in 0.9% saline. Compounds of the invention were synthesized at Arena Pharmaceuticals Inc. and were dissolved in 100% PEG400. DOI was injected s.c. in a volume of 1 ml/kg, while compounds of the invention were administered p.o. in a volume of 2 ml/kg.
• Procedure:
• The “Motor Monitor” (Hamilton-Kinder, Poway, Calif.) was used for all activity measurement. This apparatus recorded rears using infrared photobeams.
• Locomotor activity testing was conducted during the light cycle (0630-1830) between 9:00 a.m. and 4:00 p.m. Animals were allowed 30 min acclimation to the testing room before testing began.
• In determining the effects of compounds of the invention on DOI-induced hypoactivity, animals were first injected with vehicle or the compound of the invention (50 μmol/kg) in their home cages. Sixty minutes later, saline or DOI (0.3 mg/kg salt) was injected. 10 min after DOI administration, animals were placed into the activity apparatus and rearing activity was measured for 10 minutes.
• Statistics and Results:
• Results (total rears over 10 minutes) were analyzed by t-test. P<0.05 was considered significant. As shown inFIG. 22,Compound 1 attenuated DOI-induced hypolocomotion in rats. In addition, as shown inFIG. 23,Compound 26 also attenuated DOI-induced hypolocomotion in rats.
Example 11
• Serotonin 5-HT2A Receptor Occupancy Studies in Monkey
• In this example, the 5HT2A receptor occupancy of a compound of the invention,Compound 1, was measured. The study was carried out in rhesus monkeys using PET and¹⁸F-altanserin.
• Radioligand:
• The PET radioligand used for the occupancy studies was¹⁸F-altanserin. Radiosynthesis of¹⁸F-altanserin is achieved in high specific activities and is suitable for radiolabeling 5HT2a receptors in vivo (see Staley et al.,Nucl. Med. Biol.,28:271-279 (2001) and references cited within). Quality control issues (chemical and radiochemical purity, specific activity, stability etc) and appropriate binding of the radioligand were verified in rat brain slices prior to use in PET experiments.
• Drug Doses and Formulations:
• Briefly, the radiopharmaceutical was dissolved in sterile 0.9% saline, pH approx 6-7. The compounds of the invention (Compound 1) were dissolved in 60% PEG 400-40% sterile saline on the same day of the PET experiment.
• Serotonin 5HT2a occupancy studies in humans have been reported for MI 00,907 (Grunder et al.,Neuropsychopharmacology,17:175-185 (1997), and Talvik-Lofti et al.,Psychophamacology,148:400-403 (2000)). High occupancies of the 5HT2a receptors have been reported for various oral doses (doses studied ranged from 6 to 20 mg). For example, an occupancy of >90% was reported for a dose of 20 mg (Talvik-Lofti et al., supra), which translates to approx. 0.28 mg/kg. It may therefore be anticipated that an i.v. dose of 0.1 to 0.2 mg/kg of M100,907 is likely to provide high receptor occupancy. A 0.5 mg/kg dose ofCompound 1 was used in these studies.
• PET Experiments:
• The monkey was anesthetized by using ketamine (10 mg/kg) and was maintained using 0.7 to 1.25% isoflurane. Typically, the monkey had two i.v. lines, one on each arm. One i.v. line was used to administer the radioligand, while the other line was used to draw blood samples for pharmacokinetic data of the radioligand as well as the cold drugs. Generally, rapid blood samples were taken as the radioligand is administered which then taper out by the end of the scan. A volume of approximately 1 ml of blood was taken per time point, which was spun down, and a portion of the plasma was counted for radioactivity in the blood.
• An initial control study was carried out in order to measure baseline receptor densities. PET scans on the monkey were separated by at least two weeks. Unlabeled drug (Compound 1) was administered intravenously, dissolved in 80% PEG 400:40% sterile saline.
• PET Data Analysis:
• PET data were analyzed by using cerebellum as the reference region and using the distribution volume region (DVR) method. This method has been applied for the analysis of¹⁸F-altanserin PET data in nonhuman primate and human studies (Smith et al., Synapse, 30:380-392 (1998).
• The 5HT2A occupancy (rhesus monkey experimental methods) ofCompound 1 is shown inFIGS. 24-27. The results of both an 8 hour and 24 hour study are shown. The test compound was administered via i.v. infusion in 5.0 ml of 80% PEG400. For the 8 hour study, venous blood samples were drawn at 5 minutes postCompound 1 and 15 minutes before PET scan. For the 24 hour study, venous blood samples were drawn at 5 minutes postCompound 1 and 10 minutes before PET scan.
• The results show that 5HT2A receptor occupancy ofCompound 1 at the dose of 0.5 mg/kg after 8 hours following drug administration was approximately 90% in the cortical regions, which is an area of high 5HT2A receptor density. This occupancy dropped to approximately 80% at 24 hours post-injection although no measurable test drug concentrations were apparent in plasma samples after 8 hours.
Example 12
• The Effect of Compounds of the Invention and Zolpidem on Delta Power in Rats
• In this example, the effect of Compounds of the Invention, such asCompound 1 andCompound 26, on sleep and wakefullness was compared to the reference drug zolpidem. Drugs were administered during the middle of the light period (inactivity period).
• Briefly, four compounds of the invention, including Compound 1 (1.0 mg/kg) and Compound 26 (1.4 mg/kg), were tested for their effects on sleep parameters and were compared to zolpidem (5.0 mg/kg, Sigma, St. Louis, Mo.) and vehicle control (80% Tween 80, Sigma, St. Louis, Mo.). A repeated measures design was employed in which each rat was to receive seven separate dosings via oral gavage. The first and seventh dosings were vehicle and the second through sixth were the test compounds and zolpidem given in counter-balanced order. Since all dosings were administered while the rats were connected to the recording apparatus, 60% CO₂/40% O₂gas was employed for light sedation during the oral gavage process. Rats appeared fully recovered within 60 seconds following the procedure. A minimum of three days elapsed between dosings. In order to test the effect of the compounds on sleep consolidation, dosing occurred during the middle of the rats' normal inactive period (6 hours following lights on). Dosing typically occurred between 13:15 and 13:45 using a 24 hour notation. All dosing solutions were made fresh on the day of dosing. Following each dosing, animals were continuously recorded until lights out the following day (˜30 hours).
• Animal Recording and Surgical Procedures:
• Animals were housed in a temperature controlled recording room under a 12/12 light/dark cycle (lights on at 7:00 am) and had food and water available ad libitum. Room temperature (24+2° C.), humidity (50+20% relative humidity) and lighting conditions were monitored continuously via computer. Drugs were administered via oral gavage as described above, with a minimum of three days between dosings. Animals were inspected daily in accordance with NIH guidelines.
• Eight male Wistar rats (300+25 g; Charles River, Wilmington, Mass.) were prepared with chronic recording implants for continuous electroencephalograph (EEG) and electromyograph (EMG) recordings. Under isoflurane anesthesia (1-4%), the fur was shaved from the top of the skull and the skin was disinfected with Betadine and alcohol. A dorsal midline incision was made, the temporalis muscle retracted, and the skull cauterized and thoroughly cleaned with a 2% hydrogen peroxide solution. Stainless steel screws (#000) were implanted into the skull and served as epidural electrodes. EEG electrodes were positioned bilaterally at +2.0 mm AP from bregma and 2.0 mm ML and at −6.0 mm AP and 3.0 mm ML. Multi-stranded twisted stainless steel wire electrodes were sutured bilaterally in the neck muscles for recording of the EMG. EMG and EEG electrodes were soldered to a head plug connector that was affixed to the skull with dental acrylic. Incisions were closed with suture (silk 4-0) and antibiotics administered topically. Pain was relieved by a long-lasting analgesic (Buprenorphine) administered intramuscularly once post-operatively. Post-surgery, each animal was placed in a clean cage and observed until it recovered. Animals were permitted a minimum of one week post-operative recovery before study.
• For sleep recordings, animals were connected via a cable and a counter-balanced commutator to a Neurodata model 15 data collection system (Grass-Telefactor, West Warwick, R.I.). The animals were allowed an acclimation period of at least 48 hours before the start of the experiment and were connected to the recording apparatus continuously throughout the experimental period except to replace damaged cables. The amplified EEG and EMG signals were digitized and stored on a computer using SleepSign software (Kissei Comtec, Irvine Calif.).
• Data Analysis:
• EEG and EMG data were scored visually in 10 second epochs for waking (W), REMS, NREMS. Scored data were analyzed and expressed as time spent in each state per half hour. Sleep bout length and number of bouts for each state were calculated in hourly bins. A “bout” consisted of a minimum of two consecutive epochs of a given state. EEG delta power (0.5-3.5 Hz) within NREMS was also analyzed in hourly bins. The EEG spectra during NREMS were obtained offline with a fast Fourier transform algorithm on all epochs without artifact. The delta power was normalized to the average delta power in NREMS between 23:00 and 1:00, a time when delta power is normally lowest.
• Data were analyzed using repeated measures ANOVA. Light phase and dark phase data were analyzed separately. Both the treatment effect within each rat and the time by treatment effect within each rat was analyzed. Since two comparisons were made, a minimum value of P<0.025 was required for post hoc analysis. When statistical significance was found from the ANOVAs, t-tests were performed comparing all compounds to vehicle and the test compounds to zolpidem.
• Results:
• Three rats completed the entire dosing protocol of 7 conditions. The remaining 5 animals completed only 3 to 6 of the 7 conditions, primarily because of loss of the implant. However, all drug conditions were tested on a minimum of 5 rats.
• Although duration of the effect varied with each test compound, delta power was significantly increased (p<0.05) initially after dosing for all test compounds as compared to vehicle (seeFIG. 28). There was a trend, and statistical significance in some conditions, for all compounds to increase NREMS bout length, while the number of Waking bouts and NREMS bouts were decreased as compared to vehicle. No significant effects were observed on Waking bout length, REMS bout length and bout number, or total time spent in each state.
• These results demonstrate that compounds of the invention promote sleep consolidation in rats during a time in their circadian sleep cycle that their sleep is naturally fragmented. This conclusion is supported by the trend for all compounds to increase NREMS bout length while the number of Waking and NREMS bouts decreased. Delta power during NREMS increased during the same period when sleep consolidation was facilitated, indicating that these compounds can promote “deeper” sleep as well as sleep consolidation. Hence, compounds of the invention can be effective treatments for sleep disorders.
• No significant differences between the treatments were found for waking (FIGS. 28 and 29), NREMS sleep (FIGS. 30 and 31), or REMS sleep (FIGS. 32 and 33). Delta power during NREMS, however, was significantly different between drug conditions and vehicle control (FIGS. 34 and 35).Compound 1 andCompound 26 significantly increased delta power during the second hour following dosing (15:00).
• No significant effects were found on either waking sleep bout length or number of bouts (FIGS. 36 and 37). Significant differences were found, however, in both NREMS and REMS bout length.Compound 1 significantly increased NREMS bout length during the second hour (FIG. 38). The number of NREMS bouts did not show significance (FIG. 39). REMS bout length was significantly increased byCompound 1 andCompound 26 during the fourth hour (FIG. 40). The number of REMS bouts did not show significance (FIG. 41).
• Those skilled in the art will recognize that various modifications, additions, substitutions, and variations to the illustrative examples set forth herein can be made without departing from the spirit of the invention and are, therefore, considered within the scope of the invention. All documents referenced above, including, but not limited to, printed publications, and provisional and regular patent applications, are incorporated herein by reference in their entirety.

Claims (54)

1. A compound of Formula (I):

or a pharmaceutically acceptable salt, hydrate or solvate thereof;

wherein:

i) R₁is aryl or heteroaryl each optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅each selected independently from the group consisting of C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, C_1-6alkylimino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, C_2-8dialkylsulfonamide, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-6haloalkylthio, heterocyclic, hydroxyl, thiol, nitro, phenoxy and phenyl, or two adjacent R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅together with the atoms to which they are attached form a C_5-7cycloalkyl group or heterocyclic group each optionally substituted with F, Cl, or Br; and wherein said C_2-6alkenyl, C_1-6alkyl, C_2-6alkynyl, C_1-6alkylamino, C_1-6alkylimino, C_2-8dialkylamino, heterocyclic, and phenyl are each optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C₁-alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-6haloalkylthio, hydroxyl, thiol and nitro;

ii) R₂is selected from the group consisting of H, C_1-6alkyl, C_2-6alkenyl, C_2-6alkynyl and C_3-7cycloalkyl;

iii) R₃is selected from the group consisting of H, C_2-6alkenyl, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, halogen, heteroaryl and phenyl; and wherein each of said C_2-6alkenyl, C_1-6alkyl, C_2-6alkynyl, C_1-6alkylsulfonamide, C_3-7cycloalkyl, heteroaryl and phenyl groups can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of C1-5acyl, C_1-5acyloxy, C_2-6alkenyl, C_1-4alkoxy, C_1-8alkyl, C_1-6alkylamino, C_2-8dialkylamino, C_1-4alkylcarboxamide, C_2-6alkynyl, C_1-4alkylsulfonamide, C_1-4alkylsulfinyl, C_1-4alkylsulfonyl, C_1-4alkylthio, C_1-4alkylureyl, amino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-6cycloalkyl, C_2-6dialkylcarboxamide, halogen, C_1-4haloalkoxy, C_1-4haloalkyl, C_1-4haloalkylsulfinyl, C_1-4haloalkylsulfonyl, C_1-4haloalkylthio, hydroxyl, nitro and sulfonamide;

iv) R₄is selected from the group consisting of H, C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-4alkylsulfonamide, C_1-6alkylsulfinyl, C_1-4alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, C_2-8dialkylsulfonamide, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-4haloalkylthio, hydroxyl, thiol, nitro and sulfonamide;

v) R₅is selected from the group consisting of C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-4alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, C_2-8dialkylsulfonamide, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-6haloalkylthio, hydroxyl, thiol, nitro and sulfonamide, wherein said C_1-6alkoxy group is optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-5acyl, C_1-5acyloxy, C_2-6alkenyl, C_1-4alkoxy, C_1-8alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, C_1-4alkylcarboxamide, C_2-6alkynyl, C_1-4alkylsulfonamide, C_1-4alkylsulfinyl, C_1-4alkylsulfonyl, C_1-4alkylthio, C_1-4alkylureyl, amino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-6cycloalkyl, C_2-6dialkylcarboxamide, halogen, C_1-4haloalkoxy, C_1-4haloalkyl, C_1-4haloalkylsulfinyl, C_1-4haloalkylsulfonyl, C_1-4haloalkylthio, hydroxyl, nitro and phenyl, and wherein said amino and phenyl substituents are each optionally substituted with 1 to 5 further substituents selected from the group consisting of halogen and carbo-C_1-6-alkoxy;

vi) R_6a, R_6b, and R_6care each independently selected from the group consisting of H, C_1-6acyl, C_1-6acyloxy, C_2-6alkenyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylcarboxamide, C_2-6alkynyl, C_1-6alkylsulfonamide, C_1-6alkylsulfinyl, C_1-6alkylsulfonyl, C_1-6alkylthio, C_1-6alkylureyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, C_2-8dialkylcarboxamide, C_2-8dialkylsulfonamide, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, C_1-6haloalkylsulfinyl, C_1-6haloalkylsulfonyl, C_1-6haloalkylthio, hydroxyl, thiol, nitro and sulfonamide;

vii) R₇and R8 are independently H or C_1-8alkyl;

viii) X is O or S; and

ix) Q is C_1-3alkylene optionally substituted with 1 to 4 substituents selected from the group consisting of C_1-3alkyl, C_1-4alkoxy, carboxy, cyano, C_1-3haloalkyl, halogen and oxo; or Q is a bond.

2. The compound according toclaim 1 wherein R₁is phenyl or naphthyl each optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅each selected independently from the group consisting of C_1-6acyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylsulfonyl, amino, C_1-6alkylamino, C_2-8dialkylamino, C_1-6alkylimino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, C_3-7cycloalkyl, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, heterocyclic, hydroxyl, nitro, and phenyl, or two adjacent R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅together with the atoms to which they are attached form a C_5-7cycloalkyl group or heterocyclic group each optionally substituted with F; and wherein said C_1-6alkyl, C_1-6alkylimino, and heterocyclic are each optionally substituted with 1 to substituents selected independently from the group consisting of C_1-6acyl, C_1-6alkoxy, C_1-6alkyl, C_1-6alkylsulfonyl, amino, C_1-6alkylamino, C_2-8dialkylamino, carboxamide, cyano, C_3-7cycloalkyl, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, and hydroxyl.

3. The compound according toclaim 1 wherein R₁is phenyl or naphthyl each optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅each selected independently from the group consisting of C_1-6acyl, C_1-6alkoxy, C_1-4alkyl, amino, CI-6 alkylamino, C_2-8dialkylamino, C_1-6alkylimino, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, heterocyclic, hydroxyl, nitro, and phenyl, or two adjacent R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅together with the atoms to which they are attached form a C_5-7cycloalkyl group or heterocyclic group each optionally substituted with F; and wherein said C_1-6alkyl, C_1-6alkylimino, and heterocyclic are each optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, and hydroxyl.

4. The compound according toclaim 1 wherein R₁is phenyl or naphthyl each optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅each selected independently from the group consisting of —C(O)CH₃, —OCH₃, —CH₃, —CH(CH₃)₂, —CH(OH)CH₃, —N(CH₃)₂, (2-dimethylamino-ethyl)-methyl-amino, (3-dimethylamino-propyl)-methyl-amino, —C(═NOH)CH₃, cyano, —F, —Cl, —Br, —OCF₃, —CF₃, 4-methyl-piperazin-1-yl, morpholin-4-yl, 4-methyl-piperidin-1-yl, hydroxyl, nitro, and phenyl.

5. The compound according toclaim 1 wherein R₁is phenyl or naphthyl each optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅each selected independently from the group consisting of —OCH₃, —CH₃, cyano, —F, —Cl, —Br, —OCF₃, and —CF₃.

6. The compound according toclaim 1 wherein R₁is heteroaryl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃each selected independently from the group consisting of C_1-6acyl, C_1-6alkoxy, C_1-6alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, C_1-6alkylimino, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, heterocyclic, hydroxyl, nitro, and phenyl, or two adjacent R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅together with the atoms to which they are attached form a C_5-7cycloalkyl group or heterocyclic group each optionally substituted with F; and wherein said C_1-6alkyl, C_1-6alkylimino, and heterocyclic are each optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, and hydroxyl.

7. The compound according toclaim 1 wherein R₁is heteroaryl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃each selected independently from the group consisting of —C(O)CH₃, —OCH₃, —CH₃, —CH(CH₃)₂, —CH(OH)CH₃, —N(CH₃)₂, (2-dimethylamino-ethyl)-methyl-amino, (3-dimethylamino-propyl)-methyl-amino, —C(═NOH)CH₃, cyano, —F, —Cl, —Br, —OCF₃, —CF₃, 4-methyl-piperazin-1-yl, morpholin-4-yl, 4-methyl-piperidin-1-yl, hydroxyl, nitro, and phenyl.

8. The compound according toclaim 1 wherein R₁is heteroaryl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃each selected independently from the group consisting of —OCH₃, —CH₃, cyano, —F, —Cl, —Br, —OCF₃, and —CF₃.

9. The compound according toclaim 1 wherein R₂is H or C_1-6alkyl.

10. The compound according toclaim 1 wherein R₂is selected from the group consisting of —CH₃, —CH₂CH₃, —CH(CH₃)₂, —CH₂CH₂CH₃, —CH₂CH(CH₃)₂and —CH₂CH₂CH₂CH₃.

11. The compound according toclaim 1 wherein R₂is —CH₃or —CH(CH₃)₂.

12. The compound according toclaim 1 wherein R₂is H.

13. The compound according toclaim 1 wherein R₃is H or halogen.

14. The compound according toclaim 1 wherein R₃is H, F, Cl, or Br.

15. The compound according toclaim 1 wherein R4 is selected from the group consisting of H, C_1-6alkyl and C_1-6haloalkyl.

16. The compound according toclaim 1 wherein R₄is H or —CF₃.

17. The compound according toclaim 1 wherein R₅is selected from the group consisting of C_1-6alkoxy, C_1-6alkylthio, amino, C_1-6alkylamino, C_2-8dialkylamino, halogen, C_1-6haloalkoxy, and hydroxyl, wherein said C_1-6alkoxy group can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of amino, C_1-6alkylamino, C_2-8dialkylamino, amino, carbo-C_1-6-alkoxy, carboxamide, carboxy, cyano, halogen, and phenyl, and wherein said amino and phenyl substituents are each optionally substituted with 1 to 5 further substituents selected from the group consisting of halogen and carbo-C_1-6-alkoxy.

18. The compound according toclaim 1 wherein R₅is selected from the group consisting of C_1-6alkoxy, C_1-6haloalkoxy, and hydroxyl, wherein said C_1-6alkoxy group can be optionally substituted with 1 to 5 substituents selected independently from the group consisting of amino, C_2-8dialkylamino, carboxy, and phenyl, and wherein said amino and phenyl are each optionally substituted with 1 to 5 further substituents selected from the group consisting of halogen and carbo-C_1-6-alkoxy.

19. The compound according toclaim 1 wherein R₅is selected from the group consisting of —OCH₃, —OCH₂CH₃, —OCH(CH₃)₂, —OCF₃, hydroxyl, benzyloxy, 4-chloro-benzyloxy, phenethyloxy, 2-dimethylamino-ethoxy, 3-dimethylamino-propoxy, carboxymethoxy, and 2-tert-butoxycarbonylamino-ethoxy.

20. The compound according toclaim 1 wherein R_6a, R_6b, and R_6care each independently selected from the group consisting of H, C_1-6alkoxy, C_1-6alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, hydroxyl, and nitro.

21. The compound according toclaim 1 wherein R_6a, R_6b, and R_6care each independently selected from the group consisting of —H, —OCH₃, —CH₃, —N(CH₃)₂, cyano, —F, —Cl, —Br, —OCF₃, hydroxyl, and nitro.

22. The compound according toclaim 1 wherein R_6a, R_6b, and R_6care all —H.

23. The compound according toclaim 1 wherein R₇is —H.

24. The compound according toclaim 1 wherein R8 is —H.

25. The compound according toclaim 1 wherein X is O.

26. The compound according toclaim 1 wherein X is S.

27. The compound according toclaim 1 wherein Q is —C(O)—.

28. The compound according toclaim 1 wherein Q is —CH₂—.

29. The compound according toclaim 1 wherein Q is a bond.

30. The compound according toclaim 1 of Formula (IIa):

wherein:

R₁is phenyl or naphthyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅each selected independently from the group consisting of C_1-6acyl, C_1-6alkoxy, C_1-6alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, C_1-6alkylimino, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, heterocyclic, hydroxyl, nitro, and phenyl, or two adjacent R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅together with the atoms to which they are attached form a C_5-7cycloalkyl group or heterocyclic group each optionally substituted with F; and wherein said C_1-6alkyl, C_1-6alkylimino, and heterocyclic are each optionally substituted with 1 to 5 substituents selected independently from the group consisting of C_1-6alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, and hydroxyl;

R₂is C_1-6alkyl;

R₃is H or halogen;

R₄is selected from the group consisting of H, C_1-6alkyl and C_1-6haloalkyl;

R₅is selected from the group consisting of C_1-6alkoxy, C_1-6haloalkoxy, and hydroxyl, wherein said C_1-6alkoxy group can be optionally substituted with 1 to 5 further substituents selected independently from the group consisting of amino, C_2-8dialkylamino, carboxy, and phenyl, and wherein said amino and phenyl are each optionally substituted with 1 to 5 further substituents selected from the group consisting of halogen and carbo-C_1-6-alkoxy;

R_6a, R_6b, and R_6care each independently selected from the group consisting of H, C_1-6alkoxy, C_1-6alkyl, amino, C_1-6alkylamino, C_2-8dialkylamino, cyano, halogen, C_1-6haloalkoxy, C_1-6haloalkyl, hydroxyl, and nitro;

R₇and R₈are both H;

X is O; and

Q is a bond.

31. The compound according toclaim 1 of Formula (IIa):

wherein:

R₁is phenyl or naphthyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, R₁₃, R₁₄, and R₁₅each selected independently from the group consisting of —C(O)CH₃, —OCH₃, -CH₃, —CH(CH₃)₂, —CH(OH)CH₃, —N(CH₃)₂, (2-dimethylamino-ethyl)-methyl-amino, (3-dimethylamino-propyl)-methyl-amino, —C(═NOH)CH₃, cyano, —F, —Cl, —Br, —OCF₃, —CF₃, 4-methyl-piperazin-1-yl, morpholin-4-yl, 4-methyl-piperidin-1-yl, hydroxyl, nitro, and phenyl;

R₂is —CH₃or —CH(CH₃)₂;

R₃is —H, —F, —Cl, or —Br;

R₄is —H, or —CF₃;

R₅is selected from the group consisting of —OCH₃, —OCH₂CH₃, —OCH(CH₃)₂, —OCF₃, hydroxyl, benzyloxy, 4-chloro-benzyloxy, phenethyloxy, 2-dimethylamino-ethoxy, 3-dimethylamino-propoxy, carboxymethoxy, and 2-tert-butoxycarbonylamino-ethoxy;

R_6a, R_6b, and R_6care each independently selected from the group consisting of —H, —OCH₃, —CH₃, —N(CH₃)₂, cyano, —F, —Cl, —Br, —OCF₃, hydroxyl, and nitro;

R₇and R₈are both —H;

X is O; and

Q is a bond.

32. The compound according toclaim 1 of Formula (IIa):

wherein:

R₁is phenyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃each selected independently from the group consisting of —C(O)CH₃, —OCH₃, —CH₃, —CH(CH₃)₂, —CH(OH)CH₃, —N(CH₃)₂, (2-dimethylamino-ethyl)-methyl-amino, (3-dimethylamino-propyl)-methyl-amino, —C(═NOH)CH₃, cyano, —F, —Cl, —Br, —OCF₃, —CF₃, 4-methyl-piperazin-1-yl, morpholin-4-yl, 4-methyl-piperidin-1-yl, hydroxyl, nitro, and phenyl;

R₂is —CH₃or —CH(CH₃)₂;

R₃is —H, —F, —Cl, or —Br;

R₄is —H, or —CF₃;

R₅is selected from the group consisting of —OCH₃, —OCH₂CH₃, —OCH(CH₃)₂, —OCF₃, hydroxyl, benzyloxy, 4-chloro-benzyloxy, phenethyloxy, 2-dimethylamino-ethoxy, 3-dimethylamino-propoxy, carboxymethoxy, and 2-tert-butoxycarbonylamino-ethoxy;

R_6a, R_6b, and R_6care each independently selected from the group consisting of —H, —OCH₃, —CH₃, —N(CH₃)₂, cyano, —F, —Cl, —Br, —OCF₃, hydroxyl, and nitro;

R₇and R₈are both —H;

X is O; and

Q is a bond.

33. The compound according toclaim 1 of Formula (IlI):

wherein:

R₁is phenyl optionally substituted with R₉, R₁₀, R₁₁, R₁₂, and R₁₃each selected independently from the group consisting of —C(O)CH₃, —OCH₃, —CH₃, —CH(CH₃)₂, —N(CH₃)₂, cyano, —F, —Cl, —Br, —OCF₃, —CF₃, hydroxyl, and nitro;

R₂is —CH₃;

R₃is —H, —F, —Cl, or —Br;

R₄is —H;

R₅is selected from the group consisting of —OCH₃, —OCH₂CH₃, —OCH(CH₃)₂, —OCF₃, hydroxyl, benzyloxy, 4-chloro-benzyloxy, phenethyloxy, 2-dimethylamino-ethoxy, 3-dimethylamino-propoxy, carboxymethoxy, and 2-tert-butoxycarbonylamino-ethoxy;

R_6a, R_6b, and R_6care each —H;

R₇and R₈are both —H;

X is O; and

Q is a bond.

34. The compound according toclaim 1 wherein the compound is selected from the group consisting of:

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-chloro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-fluoro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2,4-dichloro-phenyl urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-methoxy-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-bromo-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-chloro-3-trifluoromethyl-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3,5-difluoro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2,4-difluoro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-chloro-2-trifluoromethyl-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3,4-difluoro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-trifluoromethyl-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-trifluoromethyl-phenyl)-urea;

1-(3,5-Bis-trifluoromethyl-phenyl)-3-[3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-naphthalen-2-yl-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-nitro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-fluoro-3-nitro-phenyl)-urea;

1-(3-Acetyl-phenyl)-3-[3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-fluoro-phenyl-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-trifluoromethoxy-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-chloro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-cyano-phenyl)-urea;

1-Biphenyl-2-yl-3-[3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-isopropyl-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-naphthalen-1-yl-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2-fluoro-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-chloro-phenyl)-urea;

1-(4-Chloro-phenyl)-3-[3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-fluoro-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2,4-difluoro-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-methoxy-phenyl)-urea;

1-[3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-fluoro-phenyl)-urea;

1-(3,4-Difluoro-phenyl)-3-[3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-[3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-fluoro-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2-trifluoromethoxy-phenyl)-urea;

1-(3-Acetyl-phenyl)-3-[3-(4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-fluoro-phenyl)-urea;

1-(2,4-Difluoro-phenyl)-3-[3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-[3-(4-Bromo-2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-chloro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-fluoro-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-fluoro-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-chloro-phenyl)-urea;

1-(4-Chloro-phenyl)-3-[4-methoxy-3-(2-methyl-5-trifluoromethyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-(3-Chloro-phenyl)-3-[3-(2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-(4-Fluoro-phenyl)-3-[3-(2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-[3-(4-Chloro-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-chloro-phenyl)-urea;

1-(3,4-Difluoro-phenyl)-3-[3-(2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-(3-Chloro-4-fluoro-phenyl)-3-[3-(2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-(2-Chloro-4-trifluoromethyl-phenyl)-3-[3-(2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-[3-(4-Bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-chloro-phenyl)-urea;

1-[3-(4-Bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-fluoro-phenyl)-urea;

1-[3-(4-Bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3,4-difluoro-phenyl)-urea;

1-[3-(4-Bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-chloro-4-phenyl)-urea;

1-[3-(4-Bromo-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2-Chloro-4-trifluoromethyl-phenyl)-urea;

1-[3-(4-Chloro-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-fluoro-phenyl)-urea;

1-[3-(4-Chloro-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3,4-difluoro-phenyl)-urea;

1-(3-Chloro-4-fluoro-phenyl)-3-[3-(4-Chloro-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-[3-(4-Chloro-2-isopropyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2-Chloro-4-trifluoromethyl-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-hydroxy-phenyl]-3-(4-chloro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-isopropoxy-phenyl]-3-(4-chloro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-isopropoxy-phenyl]-3-(4-fluoro-phenyl)-urea;

1-[4-Benzyloxy-3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-chloro-phenyl)-urea;

1-[4-Benzyloxy-3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-fluoro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(4-chloro-benzyloxy)-phenyl]-3-(4-chloro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(4-chloro-benzyloxy)-phenyl]-3-(4-fluoro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-phenethyloxy-phenyl]-3-(4-fluoro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-phenethyloxy-phenyl]-3-(4-chloro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-ethoxy-phenyl]-3-(4-chloro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-ethoxy-phenyl]-3-(4-fluoro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenyl]-3-(4-chloro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-y)-4-(2-dimethylamino-ethoxy)-phenyl]-3-(4-fluoro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2 H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-chloro-phenyl)-thiourea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-methoxy-phenyl)-urea;

1-(4-Chloro-phenyl)-3-[4-methoxy-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-isopropyl-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2,4-dichloro-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-naphthalen-1-yl-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-chloro-2-trifluoromethyl-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-trifluoromethyl-phenyl)-urea;

1-(4-Bromo-phenyl)-3-[3-(4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-(3,5-Bis-trifluoromethyl-phenyl)-3-[3-(4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-(3-Chloro-phenyl)-3-[3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-(4-Chloro-3trifluoromethyl-phenyl)-3-[3-(4-fluoro-2methyl-2H-pyrazol-3yl)-4-methoxy-phenyl]-urea;

1-(4-Bromo-phenyl)-3-[3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-[3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-trifluoromethyl-phenyl)-thiourea;

1-[3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-methoxy-phenyl)-urea;

1-(3-Acetyl-phenyl)-3-[3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-[3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-trifluoromethyl-phenyl)-urea and

1-[3-(4-Fluoro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-trifluoromethyl-phenyl)-urea.

35. The according toclaim 1 wherein the compound is selected from the group consisting of:

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-chloro-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3,4-difluoro-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3,5-difluoro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-[3-(1-hydroxy-ethyl)-phenyl]-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-[3-(1-hydroxyimino-ethyl)-phenyl]-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2-fluoro-phenyl)-urea;

1-(4-Chloro-phenyl)-3-[3-(2-methyl-2H-pyrazol-3-yl)-4-trifluoromethoxy-phenyl]-urea;

1-(2,4-Difluoro-phenyl)-3-[3-(2-methyl-2H-pyrazol-3-yl)-4-trifluoromethoxy-phenyl]-urea;

1-(4-Fluoro-phenyl)-3-[3-(2-methyl-2H-pyrazol-3-yl)-4-trifluoromethoxy-phenyl]-urea;

1-[3-(2-Methyl-2H-pyrazol-3-yl)-4-trifluoromethoxy-phenyl]-3-(4-trifluoromethyl-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-[4-chloro-2-(4-methyl-piperazin-1-yl)-phenyl]-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-hydroxy-phenyl]-3-(2,4-difluoro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-chloro-2-morpholin-4-yl-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-[4-chloro-2-(4-methyl-piperidin-1-yl)-phenyl]-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(4-chloro-2-hydroxy-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-trifluoromethoxy-phenyl]-3-(4-chloro-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-cyano-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(3-nitro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-{4-chloro-2[(2-dimethylamino-ethyl)-methyl-amino]-phenyl }-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-{4-chloro-2[(3-dimethylamino-propyl)-methyl-amino]-phenyl}-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-trifluoromethoxy-phenyl]-3-(2,4-difluoro-phenyl)-urea;

1-(3-Acetyl-phenyl)-3-[3-(2-methyl-2H-pyrazol-3-yl)-4-trifluoromethoxy-phenyl]-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2,2-difluoro-benzo[1,3]dioxol-5-yl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-y 1)-4-methoxy-phenyl]-3-(4-dimethylamino-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(4-chloro-phenyl)-urea;

{2-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-[3-(4-chloro-phenyl)-ureido]-phenoxy}-acid;

1-(4-Chloro-phenyl)-3-[4-hydroxy-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-hydroxy-phenyl]-3-(2,4-difluoro-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-hydroxy-phenyl]-3-(4-chloro-phenyl)-urea;

1-(4-Chloro-phenyl)-3-[4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenyl]-3-(2,4-difluoro-phenyl)-urea;

1-(2,4-Difluoro-phenyl)-3-[4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[4-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-fluoro-phenyl)-urea;

1-(4-Chloro-phenyl)-3-[4-(2-dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(4-chloro-phenyl)-urea;

1-(2,2-Difluoro-benzo[1,3]dioxol-5-yl)-3-[4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[4-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-p-tolyl-urea;

1-[4-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-methoxy-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenyl]-3-(2,4-difluoro-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(2,4-difluoro-phenyl)-urea;

1-(3-Chloro-phenyl)-3-[4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-(3-Chloro-4-fluoro-phenyl)-3-[4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-(3,4-Difluoro-phenyl)-3-[4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[4-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-trifluoromethyl-phenyl)-urea;

1-[4-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(2-fluoro-phenyl)-urea;

1-[4-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(2-fluoro-5-methyl-phenyl)-urea;

1-(2-Chloro-phenyl)-3-[4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-(2,4-Difluoro-phenyl)-3-[4-(2-dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[4-(2-Dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-fluoro-phenyl)-urea;

1-(3-Acetyl-phenyl)-3-[4-(2-dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-(2,2-Difluoro-benzo[1,3]dioxol-5-yl)-3-[4-(2-dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[4-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-phenyl-urea;

1-[4-(2-Dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(3-methoxy-phenyl)-urea;

(2-{2-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-[3-(2,4-difluoro-phenyl)-ureido]-phenoxy}-ethyl)-carbamic acid tert-butyl ester;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(2,4-difluoro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(2-chloro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(2-fluoro-phenyl)-urea;

1-(4-Chloro-phenyl)-3-[4-methoxy-3-(2H-pyrazol-3-yl)-phenyl]-urea;

1-[3-(4-Bromo-2H-pyrazol-3-yl)-4-methoxy-phenyl]-3-(2,4-difluoro-phenyl)-urea;

1-(2,4-Difluoro-phenyl)-3-[4-methoxy-3-(2H-pyrazol-3-yl)-phenyl]-urea; and

1-(4-Chloro-phenyl)-3-[4-hydroxy-3-(1-methyl-1H-pyrazol-3-yl)-phenyl]-urea.

36. The according toclaim 1 wherein the compound is selected from the group consisting of:

1-Benzoyl-3-[3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea; and

1-Benzyl-3-[3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea.

37. The according toclaim 1 wherein the compound is selected from the group consisting of:

1-Benzoyl-3-[3-(4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea;

1-Benzyl-3-[3-(4-chloro-2-methyl-2H-pyrazol-3-yl)-4-methoxy-phenyl]-urea; and

1-(4-Chloro-benzyl)-3-[4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea.

38. The according toclaim 1 wherein the compound is selected from the group consisting of:

1-(4-Chloro-phenyl)-3-[4-(2-dimethylamino-ethoxy)-3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[4-(2-Dimethylamino-ethoxy)-3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-fluoro-phenyl)-urea;

1-(2,4-Difluoro-phenyl)-3-[4-(2-dimethylamino-ethoxy)-3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-(4-Chloro-2-hydroxy-phenyl)-3-[4-(2-dimethylamino-ethoxy)-3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[4-(2-Dimethylamino-ethoxy)-3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-fluoro-2-hydroxy-phenyl)-urea;

1-(4-Chloro-3-hydroxy-phenyl)-3-[4-(2-dimethylamino-ethoxy)-3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[4-(2-Dimethylamino-ethoxy)-3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-fluoro-3-hydroxy-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenyl]-3-(4-chloro-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenyl]-3-(4-fluoro-phenyl)-urea;

1-(4-Chloro-2-hydroxy-phenyl)-3-[3-(4-chloro-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenyl]-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenyl]-3-(4-fluoro-2-hydroxy-phenyl)-urea;

1-(4-Chloro-3-hydroxy-phenyl)-3-[3-(4-chloro-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenyl]-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenyl]-3-(4-fluoro-3-hydroxy-phenyl)-urea;

1-(4-Chloro-2-hydroxy-phenyl)-3-[4-(2-dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[4-(2-Dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-fluoro-2-hydroxy-phenyl)-urea;

1-(4-Chloro-3-hydroxy-phenyl)-3-[4-(2-dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[4-(2-Dimethylamino-ethoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-fluoro-3-hydroxy-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenyl]-3-(4-chloro-2-hydroxy-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenyl]-3-(4-fluoro-2-hydroxy-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenyl]-3-(4-chloro-3-hydroxy-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(2-dimethylamino-ethoxy)-phenyl]-3-(4-fluoro-3-hydroxy-phenyl)-urea;

1-(4-Chloro-phenyl)-3-[4-(3-dimethylamino-propoxy)-3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[4-(3-Dimethylamino-propoxy)-3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-fluoro-phenyl)-urea;

1-(2,4-Difluoro-phenyl)-3-[4-(3-dimethylamino-propoxy)-3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-(4-Chloro-2-hydroxy-phenyl)-3-[4-(3-dimethylamino-propoxy)-3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[4-(3-Dimethylamino-propoxy)-3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-fluoro-2-hydroxy-phenyl)-urea;

1-(4-Chloro-3-hydroxy-phenyl)-3-[4-(3-dimethylamino-propoxy)-3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[4-(3-Dimethylamino-propoxy)-3-(4-fluoro-2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-fluoro-3-hydroxy-phenyl)-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(4-fluoro-phenyl)-urea;

1-(4-Chloro-2-hydroxy-phenyl)-3-[3-(4-chloro-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(4-fluoro-2-hydroxy-phenyl)-urea;

1-(4-Chloro-3-hydroxy-phenyl)-3-[3-(4-chloro-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-urea;

1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(4-fluoro-3-hydroxy-phenyl)-urea;

1-(4-Chloro-2-hydroxy-phenyl)-3-[4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[4-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-fluoro-2-hydroxy-phenyl)-urea;

1-(4-Chloro-3-hydroxy-phenyl)-3-[4-(3-dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea;

1-[4-(3-Dimethylamino-propoxy)-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-3-(4-fluoro-3-hydroxy-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(4-fluoro-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(4-chloro-2-hydroxy-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(4-fluoro-2-hydroxy-phenyl)-urea;

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(4-chloro-3-hydroxy-phenyl)-urea; and

1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(3-dimethylamino-propoxy)-phenyl]-3-(4-fluoro-3-hydroxy-phenyl)-urea.

39. A pharmaceutical composition comprising a compound according toclaim 1 and a pharmaceutically acceptable carrier.

40. A method for modulating the activity of a 5HT_2Aserotonin receptor by contacting the receptor with a compound according toclaim 1.

41. A method for prophylaxis or treatment of platelet aggregation in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according toclaim 1.

42. A method for prophylaxis or treatment of an indication selected from the group consisting of coronary artery disease, myocardial infarction, transient ischemic attack, angina, stroke, and atrial fibrillation in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according toclaim 1.

43. A method for prophylaxis or treatment of reducing the risk of blood clot formation in an angioplasty or coronary bypass surgery individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according toclaim 1.

44. A method for prophylaxis or treatment of reducing the risk of blood clot formation in an individual suffering from atrial fibrillation, comprising administering to said individual in need thereof a therapeutically effective amount of a compound according toclaim 1.

45. A method for prophylaxis or treatment of a sleep disorder in an individual comprising administering to said individual in need thereof a therapeutically effective amount of a compound according toclaim 1.

46. The method according toclaim 45 wherein said sleep disorder comprises fragmented sleep architecture.

47. The method according toclaim 45 wherein said effective amount of a compound according toclaim 1 promotes sleep consolidation.

48. The method according toclaim 45 wherein said effective amount of a compound according toclaim 1 increases delta power.

49. The method according toclaim 45 wherein said sleep disorder is a dyssomnia.

50. The method according toclaim 49 wherein said dyssomnia is selected from the group consisting of psychophysiological insomnia, sleep state misperception, idiopathic insomnia, obstructive sleep apnea syndrome, central sleep apnea syndrome, central alveolar hypoventilation syndrome, periodic limb movement disorder, restless leg syndrome, inadequate sleep hygiene, environmental sleep disorder, altitude insomnia, adjustment sleep disorder, insufficient sleep syndrome, limit-setting sleep disorder, sleep-onset association disorder, nocturnal eating or drinking syndrome, hypnotic dependent sleep disorder, stimulant-dependent sleep disorder, alcohol-dependent sleep disorder, toxin-induced sleep disorder, time zone change (jet lag) syndrome, shift work sleep disorder, irregular sleep-wake pattern, delayed sleep phase syndrome, advanced sleep phase syndrome and non-24-hour sleep-wake disorder.

51. The method according toclaim 45 wherein said sleep disorder is a parasomnia.

52. The method according toclaim 51 wherein said parasomnia is selected from the group consisting of confusional arousals, sleepwalking and sleep terrors, rhythmic movement disorder, sleep starts, sleep talking and nocturnal leg cramps.

53. The method according toclaim 45 wherein said sleep disorder is associated with a medical or psychiatric disorder.

54. A process for preparing a composition comprising admixing a compound according toclaim 1 and pharmaceutically acceptable carrier.

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