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ELB-139

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Chemical compound

Pharmaceutical compound

ELB-139
Identifiers

IUPAC name 1-(4-Chlorophenyl)-4-piperidin-1-yl-1,5-dihydro-imidazol-2-one
CAS Number	188116-08-7^Y
PubChemCID	11277418
ChemSpider	9452418
UNII	BKP2A5554F
CompTox Dashboard(EPA)	DTXSID40877536
Chemical and physical data
Formula	C₁₄H₁₆ClN₃O
Molar mass	277.75 g·mol⁻¹
3D model (JSmol)	Interactive image
SMILES Clc3ccc(cc3)N1CC(=NC1=O)N2CCCCC2
InChI InChI=1S/C14H16ClN3O/c15-11-4-6-12(7-5-11)18-10-13(16-14(18)19)17-8-2-1-3-9-17/h4-7H,1-3,8-10H2 Key:YGXIELIREXEJQN-UHFFFAOYSA-N
(verify)

ELB-139 (LS-191,811) is ananxiolytic drug with a novel chemical structure, which is used in scientific research. It has similar effects tobenzodiazepine drugs, but is structurally distinct and so is classed as anonbenzodiazepine anxiolytic.^[1]^[2]

ELB-139 is a subtype-selectivepartial agonist atGABA_A receptors, with highestaffinity for the α3 subtype, but highestefficacy at α1 and α2.^[3] It has primarilyanxiolytic andanticonvulsant effects, but produces littlesedative effects orataxia,^[4] and has also been demonstrated in rats to increaseserotonin levels in thestriatum andprefrontal cortex, without affectingdopamine levels.^[5] It has been proposed as a possible candidate for a novel non-sedating anxiolytic or anticonvulsant drug for use in humans^[6] The sponsor elbion AG registered a clinical trial inClinicalTrials.govfor the treatment of anxiety associated with panic disorder but the results have not been reported.^[7] It was developed by Arzneimittelwerk Dresden in the 1990s.^[8]

References

[edit]

^Langen B, Egerland U, Bernöster K, Dost R, Unverferth K, Rundfeldt C (August 2005). "Characterization in rats of the anxiolytic potential of ELB139 [1-(4-chlorophenyl)-4-piperidin-1-yl-1,5-dihydro-imidazol-2-on], a new agonist at the benzodiazepine binding site of the GABAA receptor".The Journal of Pharmacology and Experimental Therapeutics.314 (2):717–24.doi:10.1124/jpet.105.084681.PMID 15860576.S2CID 21967108.
^Atack JR (May 2005). "The benzodiazepine binding site of GABA(A) receptors as a target for the development of novel anxiolytics".Expert Opinion on Investigational Drugs.14 (5):601–18.doi:10.1517/13543784.14.5.601.PMID 15926867.S2CID 22793644.
^Rabe H, Kronbach C, Rundfeldt C, Lüddens H (March 2007). "The novel anxiolytic ELB139 displays selectivity to recombinant GABA(A) receptors different from diazepam".Neuropharmacology.52 (3):796–801.doi:10.1016/j.neuropharm.2006.09.013.PMID 17087982.S2CID 21598180.
^Grunwald C, Rundfeldt C, Lankau HJ, Arnold T, Höfgen N, Dost R, et al. (March 2006). "Synthesis, pharmacology, and structure-activity relationships of novel imidazolones and pyrrolones as modulators of GABAA receptors".Journal of Medicinal Chemistry.49 (6):1855–66.doi:10.1021/jm0509400.PMID 16539371.
^Langen B, Rundfeldt C (January 2007). "ELB139 an agonist at the benzodiazepine binding site increases 5-HT in the striatum and prefrontal cortex of rats: a microdialysis study".Pharmacology, Biochemistry, and Behavior.86 (1):79–85.doi:10.1016/j.pbb.2006.12.010.PMID 17257662.S2CID 22862432.
^Rogawski MA (June 2006)."Diverse mechanisms of antiepileptic drugs in the development pipeline".Epilepsy Research.69 (3):273–94.doi:10.1016/j.eplepsyres.2006.02.004.PMC 1562526.PMID 16621450.
^Whiting PJ (February 2006). "GABA-A receptors: a viable target for novel anxiolytics?".Current Opinion in Pharmacology.6 (1):24–9.doi:10.1016/j.coph.2005.08.005.PMID 16359919.
^US 5869481, "Anticonvulsive 1-ar(alk)ylimidazolin-2-ones and process for making"

v t e Anxiolytics (N05B)
5-HT_1ARTooltip 5-HT1A receptoragonists	Buspirone Gepirone Tandospirone
GABA_ARTooltip GABAA receptor PAMsTooltip positive allosteric modulators	Benzodiazepines:Adinazolam Alprazolam Bromazepam Camazepam Chlordiazepoxide Clobazam Clonazepam Clorazepate Clotiazepam Cloxazolam Diazepam^# Ethyl loflazepate Etizolam Fludiazepam Halazepam Ketazolam Lorazepam^# Medazepam Nordazepam Oxazepam Pinazepam Prazepam;Others:Alpidem^‡ Barbiturates (e.g.,phenobarbital) Carbamates (e.g.,meprobamate) Carisoprodol Chlormezanone^‡ Ethanol (alcohol) Etifoxine
Gabapentinoids (α₂δ VDCC blockers)	Gabapentin Gabapentin enacarbil Phenibut Pregabalin
Antidepressants	SSRIsTooltip Selective serotonin reuptake inhibitors (e.g.,escitalopram) SNRIsTooltip Serotonin-norepinephrine reuptake inhibitors (e.g.,duloxetine) SARIsTooltip Serotonin antagonist and reuptake inhibitors (e.g.,trazodone) TCAsTooltip Tricyclic antidepressants (e.g.,clomipramine^#) TeCAsTooltip Tetracyclic antidepressants (e.g.,mirtazapine) MAOIsTooltip Monoamine oxidase inhibitors (e.g.,phenelzine);Others:Agomelatine Bupropion Tianeptine Vilazodone Vortioxetine
Sympatholytics (Antiadrenergics)	Alpha-1 blockers (e.g.,prazosin) Alpha-2 agonists (e.g.,clonidine,dexmedetomidine,guanfacine) Beta blockers (e.g.,propranolol,atenolol,betaxolol,nadolol,oxprenolol,pindolol)
Others	Benzoctamine Cycloserine Fabomotizole Hydroxyzine Lorpiprazole Mebicar Mepiprazole Nicotine (tobacco) Opipramol Oxaflozane^‡ Phenaglycodol Phenibut Picamilon Selank Tiagabine Tofisopam Validolum
^#WHO-EM ^‡Withdrawn from market Clinical trials: ^†Phase III ^§Never to phase III

v t e GABA_A receptor positive modulators
Alcohols	Brometone Butanol Chloralodol Chlorobutanol (cloretone) Ethanol (alcohol) (alcoholic drink) Ethchlorvynol Isobutanol Isopropanol Menthol Methanol Methylpentynol Pentanol Petrichloral Propanol tert-Butanol (2M2P) tert-Pentanol (2M2B) Tribromoethanol Trichloroethanol Triclofos Trifluoroethanol
Barbiturates	(-)-DMBB Allobarbital Alphenal Amobarbital Aprobarbital Barbexaclone Barbital Benzobarbital Benzylbutylbarbiturate Brallobarbital Brophebarbital Butabarbital/Secbutabarbital Butalbital Buthalital Butobarbital Butallylonal Carbubarb Crotylbarbital Cyclobarbital Cyclopentobarbital Difebarbamate Enallylpropymal Ethallobarbital Eterobarb Febarbamate Heptabarb Heptobarbital Hexethal Hexobarbital Metharbital Methitural Methohexital Methylphenobarbital Narcobarbital Nealbarbital Pentobarbital Phenallymal Phenobarbital Phetharbital Primidone Probarbital Propallylonal Propylbarbital Proxibarbital Reposal Secobarbital Sigmodal Spirobarbital Talbutal Tetrabamate Tetrabarbital Thialbarbital Thiamylal Thiobarbital Thiobutabarbital Thiopental Thiotetrabarbital Valofane Vinbarbital Vinylbital
Benzodiazepines	2-Oxoquazepam 3-Hydroxyphenazepam Adinazolam Alprazolam Arfendazam Avizafone Bentazepam Bretazenil Bromazepam Bromazolam Brotizolam Camazepam Carburazepam Chlordiazepoxide Ciclotizolam Cinazepam Cinolazepam Clazolam Climazolam Clobazam Clonazepam Clonazolam Cloniprazepam Clorazepate Clotiazepam Cloxazolam CP-1414S Cyprazepam Delorazepam Demoxepam Diazepam Diclazepam Dimdazenil Doxefazepam Elfazepam Estazolam Ethyl carfluzepate Ethyl dirazepate Ethyl loflazepate Etizolam FG-8205 Fletazepam Flubromazepam Flubromazolam Fludiazepam Flunitrazepam Flunitrazolam Flurazepam Flutazolam Flutemazepam Flutoprazepam Fosazepam Gidazepam Halazepam Haloxazolam Iclazepam Imidazenil Irazepine Ketazolam Lofendazam Lopirazepam Loprazolam Lorazepam Lormetazepam Meclonazepam Medazepam Menitrazepam Metaclazepam Mexazolam Midazolam Motrazepam N-Desalkylflurazepam Nifoxipam Nimetazepam Nitrazepam Nitrazepate Nitrazolam Nordazepam Nortetrazepam Oxazepam Oxazolam Phenazepam Pinazepam Pivoxazepam Prazepam Premazepam Proflazepam Pyrazolam QH-II-66 Quazepam Reclazepam Remimazolam Rilmazafone Ripazepam Ro48-6791 Ro48-8684 SH-053-R-CH3-2′F Sulazepam Temazepam Tetrazepam Tolufazepam Triazolam Triflubazam Triflunordazepam (Ro5-2904) Tuclazepam Uldazepam Zapizolam Zolazepam Zomebazam
Carbamates	Carisbamate Carisoprodol Clocental Cyclarbamate Difebarbamate Emylcamate Ethinamate Febarbamate Felbamate Hexapropymate Hydroxyphenamate Lorbamate Mebutamate Meprobamate Nisobamate Pentabamate Phenprobamate Procymate Styramate Tetrabamate Tybamate
Flavonoids	6-Methylapigenin Ampelopsin (dihydromyricetin) Apigenin Baicalein Baicalin Catechin EGC EGCG Hispidulin Linarin Luteolin Rc-OMe Skullcap constituents (e.g.,baicalin) Wogonin
Imidazoles	Etomidate Metomidate Methoxyetomidate Propoxate Isopropoxate Butomidate Iso-butomidate Sec-butomidate CF2-Etomidate CF3-Etomidate CF3-Propoxate Flutomidate 2,6-Dichloro-3-fluoroetomidate
Kava constituents	10-Methoxyyangonin 11-Methoxyyangonin 11-Hydroxyyangonin Desmethoxyyangonin 11-Methoxy-12-hydroxydehydrokavain 7,8-Dihydroyangonin Kavain 5-Hydroxykavain 5,6-Dihydroyangonin 7,8-Dihydrokavain 5,6,7,8-Tetrahydroyangonin 5,6-Dehydromethysticin Methysticin 7,8-Dihydromethysticin Yangonin
Monoureides	Acecarbromal Apronal (apronalide) Bromisoval Carbromal Capuride Ectylurea
Neuroactive steroids	Acebrochol Allopregnanolone (brexanolone) Alfadolone Alfaxalone 3α-Androstanediol Androstenol Androsterone Certainanabolic-androgenic steroids Cholesterol DHDOC 3α-DHP 5α-DHP 5β-DHP DHT Etiocholanolone Ganaxolone Hydroxydione Minaxolone ORG-20599 ORG-21465 P1-185 Posovolone Pregnanolone (eltanolone) Progesterone Renanolone SAGE-105 SAGE-324 SAGE-516 SAGE-689 SAGE-872 Testosterone THDOC Zuranolone
Nonbenzodiazepines	Cyclopyrrolones:Eszopiclone Pagoclone Pazinaclone Suproclone Suriclone Zopiclone Imidazopyridines:Alpidem DS-1 Necopidem Saripidem Zolpidem Pyrazolopyrimidines:Divaplon Fasiplon Indiplon Lorediplon Ocinaplon Panadiplon Taniplon Zaleplon Others:Adipiplon CGS-8216 CGS-9896 CGS-13767 CGS-20625 CL-218,872 CP-615,003 CTP-354 ELB-139 GBLD-345 Imepitoin JM-1232 L-838,417 Lirequinil (Ro41-3696) Miltirone (rosmariquinone) NS-2664 NS-2710 NS-11394 Pipequaline ROD-188 RWJ-51204 SB-205,384 SX-3228 TGSC01AA TP-003 TPA-023 TP-13 U-89843A U-90042 Viqualine Y-23684
Phenols	Cipepofol Fospropofol Propofol Propofol hemisuccinate Thymol
Piperidinediones	Glutethimide Methyprylon Piperidione Pyrithyldione
Pyrazolopyridines	Cartazolate Etazolate ICI-190,622 Tracazolate
Quinazolinones	Afloqualone Cloroqualone Diproqualone Etaqualone Mebroqualone Mecloqualone Methaqualone Methylmethaqualone Nitromethaqualone SL-164
Volatiles/gases	Acetone Acetophenone Acetylglycinamide chloral hydrate Aliflurane Benzene Butane Butylene Centalun Chloral Chloral betaine Chloral hydrate Chloroform Cryofluorane Desflurane Dichloralphenazone Dichloromethane Diethyl ether Enflurane Ethyl chloride Ethylene Fluroxene Gasoline Halopropane Halothane Isoflurane Kerosine Methoxyflurane Methoxypropane Nitric oxide Nitrogen Nitrous oxide Norflurane Paraldehyde Propane Propylene Roflurane Sevoflurane Synthane Teflurane Toluene Trichloroethane (methyl chloroform) Trichloroethylene Vinyl ether
Others/unsorted	3-Hydroxybutanal α-EMTBL AA-29504 Alogabat Avermectins (e.g.,ivermectin) Bromide compounds (e.g.,lithium bromide,potassium bromide,sodium bromide) Carbamazepine Chloralose Chlormezanone Clomethiazole Darigabat DEABL Deuterated etifoxine Dihydroergolines (e.g.,dihydroergocryptine,dihydroergosine,dihydroergotamine,ergoloid (dihydroergotoxine)) DS2 Efavirenz Etazepine Etifoxine Fenamates (e.g.,flufenamic acid,mefenamic acid,niflumic acid,tolfenamic acid) Fluoxetine Flupirtine Hopantenic acid KRM-II-81 Lanthanum Lavender oil Lignans (e.g.,4-O-methylhonokiol,honokiol,magnolol,obovatol) Loreclezole Menthyl isovalerate (validolum) Monastrol Nicotinic acid Nicotinamide Org 25,435 Phenytoin Propanidid Retigabine (ezogabine) Safranal Seproxetine Stiripentol Sulfonylalkanes (e.g.,sulfonmethane (sulfonal),tetronal,trional) Terpenoids (e.g.,borneol) Topiramate Valerian constituents (e.g.,isovaleric acid,isovaleramide,valerenic acid,valerenol) Unsorted benzodiazepine site positive modulators:α-Pinene MRK-409 (MK-0343) TCS-1105 TCS-1205
See also:Receptor/signaling modulators •GABA receptor modulators •GABA metabolism/transport modulators

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