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NEtPhOH-THPI

From Wikipedia, the free encyclopedia
Pharmaceutical compound
NEtPhOH-THPI
Clinical data
Other namesN′-(2-Hydroxyphenethyl)-THPI; Compound 24c; 3-(1-(2-Hydroxyphenylethyl)-1,2,3,6-tetrahydropyridin-5-yl)-1H-indole
Drug classSerotonin5-HT2 receptoragonist;Serotonin 5-HT2A receptor agonist;Serotonergic psychedelic;Hallucinogen
ATC code
  • None
Identifiers
  • 2-{2-[5-(1H-indol-3-yl)-3,6-dihydropyridin-1(2H)-yl]ethyl}phenol
Chemical and physical data
FormulaC21H22N2O
Molar mass318.420 g·mol−1
3D model (JSmol)
  • O([H])C1C=CC=CC=1CCN1CC(C2C3C(=CC=CC=3)N([H])C=2)=CCC1
  • InChI=1S/C21H22N2O/c24-21-10-4-1-6-16(21)11-13-23-12-5-7-17(15-23)19-14-22-20-9-3-2-8-18(19)20/h1-4,6-10,14,22,24H,5,11-13,15H2
  • Key:FGMLLLJKETXMGK-UHFFFAOYSA-N

NEtPhOH-THPI, also known asN′-(2-hydroxyphenethyl)-THPI, is aserotonin5-HT2 receptoragonist and possibleserotonergic psychedelic of thetetrahydropyridinylindole (THPI) family related to psychedelictryptamines.[1] It is acyclized tryptamine with anNBOMe-likesubstitution.[1]

The drug is apotent and high-efficacypartial agonist of the serotonin5-HT2A receptor.[1] Itsaffinity (Ki) for the receptor was 8.58 nM and itsEC50Tooltip half-maximal effective concentration andEmaxTooltip maximal efficacy values were 20.7 nM (66.5%) forGqsignaling and 58.4 nM (80.7%) forβ-arrestin2 signaling.[1] NEtPhOH-THPI is also a potent near-full agonist of the serotonin5-HT2B receptor (EC50 = 7.94 nM;Emax = 88.9%) and a lower-potency full agonist of the serotonin5-HT2C receptor (EC50 = 263 nM;Emax = 105.1%).[1] It is a weakserotonin reuptake inhibitor (IC50Tooltip half-maximal inhibitory concentration = 1,288 nM) as well.[1]

NEtPhOH-THPI induced thehead-twitch response, a behavioral proxy of psychedelic effects, in rodents.[1] It produced the head-twitch response at a dose of 3 mg/kg in mice but not at a dose of 1 mg/kg or 10 mg/kg.[1] The drug produced about half the maximal number of head twitches asLSD.[1] Thepreclinicalpharmacokinetics of NEtPhOH-THPI viaintraperitoneal injection have been studied.[1]

NEtPhOH-THPI was first described in thescientific literature by Rongyan Li and colleagues by 2025.[1] A close non-hallucinogenicpyrrolopyridineanalogue withantidepressant-like effects in rodents was also reported.[1] Thechemical syntheses of both this compound and NEtPhOH-THPI were described.[1]

See also

[edit]

References

[edit]
  1. ^abcdefghijklmLi R, Yan H, Chen Y, Liu Y, Tang L, Yu J, Liu J, Wang H, Wang S, Cheng J (October 2025). "Structure-Guided Design of Novel 5-HT2A Partial Agonists as Psychedelic Analogues with Antidepressant Effects".J Med Chem.68 (20):21683–21700.doi:10.1021/acs.jmedchem.5c02045.PMID 41087124.
Tryptamines
No ring subs.
4-Hydroxytryptamines
5-Hydroxytryptamines
5-Methoxytryptamines
Other ring subs.
α-Alkyltryptamines
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Cyclized
Bioisosteres
Phenethylamines
Scalines
2C-x
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DOx
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Ψ-PEA
MDxx
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5-HT1
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5-HT37
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DATTooltip Dopamine transporter
(DRIsTooltip Dopamine reuptake inhibitors)
NETTooltip Norepinephrine transporter
(NRIsTooltip Norepinephrine reuptake inhibitors)
SERTTooltip Serotonin transporter
(SRIsTooltip Serotonin reuptake inhibitors)
VMATsTooltip Vesicular monoamine transporters
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Tryptamines
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andesters/ethers
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