PNU-181731

PNU-181731
Identifiers
	IUPAC name 2,3,4,5-tetrahydro-1H-[1,4]diazepino[1,7-a]indole;
CAS Number	364344-56-9 ;
PubChem CID	9794092;
ChemSpider	7969859;
UNII	UVL6VJD7YC;
CompTox Dashboard (EPA)	DTXSID201045564 ;
Chemical and physical data
Formula	C12H14N2
Molar mass	186.258 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES C12=CC=CC=C1N3C(CCNCC3)=C2;
	InChI InChI=1S/C12H14N2/c1-2-4-12-10(3-1)9-11-5-6-13-7-8-14(11)12/h1-4,9,13H,5-8H2; Key:XORPZYQOYUSNCQ-UHFFFAOYSA-N;

PNU-181731 is a drug which acts as an agonist at serotonin 5-HT₂ receptors,^[1]^[2] with strongest binding affinity for the 5-HT_2C subtype at 4.8nM, and weaker 5-HT_2A affinity of 18nM. It has anxiolytic effects in animal studies with around one tenth the potency of alprazolam and no significant ataxia or other side effects noted.^[3]

References

^ US 6734301, Ennis ME, et al., "2,3,4,5-Tetrahydro-1H-[1,4]diazepino[1,7-a]indole compounds.", published May 11, 2004, assigned to Pharmacia and Upjohn Co Inc
^ US 8158617, Shirai J, et al., "Fused heterocyclic compound and use thereof.", published April 17, 2012, assigned to Takeda Pharmaceutical Co Ltd
^ Ennis MD, Hoffman RL, Ghazal NB, Olson RM, Knauer CS, Chio CL, et al. (July 2003). "2,3,4,5-tetrahydro- and 2,3,4,5,11,11a-hexahydro-1H-[1,4]diazepino[1,7-a]indoles: new templates for 5-HT(2C) agonists". Bioorganic & Medicinal Chemistry Letters. 13 (14): 2369–72. doi:10.1016/S0960-894X(03)00403-7. PMID 12824036.

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[1] US 6734301, Ennis ME, et al., "2,3,4,5-Tetrahydro-1H-[1,4]diazepino[1,7-a]indole compounds.", published May 11, 2004, assigned to Pharmacia and Upjohn Co Inc

[2] US 8158617, Shirai J, et al., "Fused heterocyclic compound and use thereof.", published April 17, 2012, assigned to Takeda Pharmaceutical Co Ltd

[3] Ennis MD, Hoffman RL, Ghazal NB, Olson RM, Knauer CS, Chio CL, et al. (July 2003). "2,3,4,5-tetrahydro- and 2,3,4,5,11,11a-hexahydro-1H-[1,4]diazepino[1,7-a]indoles: new templates for 5-HT(2C) agonists". Bioorganic & Medicinal Chemistry Letters. 13 (14): 2369–72. doi:10.1016/S0960-894X(03)00403-7. PMID 12824036.

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[2]

[3]

v t e Tryptamines
Tryptamines	1-Methylpsilocin 2-HO-NMT 2-Me-DET 2-Methyl-5-HT 2,N,N-TMT 4,5-DHP-DMT 4-AcO-DALT 4-AcO-DET 4-AcO-DiPT 4-AcO-DPT 4-AcO-EPT 4-AcO-MALT 4-AcO-MET 4-AcO-MiPT 4-AcO-NMT 4-AcO-TMT 4-F-5-MeO-DMT 4-HO-5-MeO-DMT 4-HO-DALT 4-HO-DBT 4-HO-DET 4-HO-DiPT 4-HO-DPT 4-HO-DSBT 4-HO-EPT 4-HO-MALT 4-HO-MET 4-HO-McPT 4-HO-McPeT 4-HO-MiPT 4-HO-MPT 4-HO-MsBT 4-HO-NALT 4-HO-NMT 4-HO-PiPT 4-HO-pyr-T 4-HO-TMT 4-HT 4-MeO-DiPT 4-MeO-DMT 4-MeO-MiPT 4-PrO-DMT 4,5-MDO-DMT 4,5-MDO-DiPT 5-BT 5-Bromo-DMT 5-CT 5-Chloro-DMT 5-Ethoxy-DMT 5-Ethyl-DMT 5-Fluoro-DET 5-Fluoro-DMT 5-Fluoro-EPT 5-Fluoro-MET 5-HO-DiPT 5-HTP (oxitriptan) 5-MeO-2-TMT 5-MeO-34MPEMT 5-MeO-7,N,N-TMT 5-MeO-DALT 5-MeO-DBT 5-MeO-DET 5-MeO-DiPT 5-MeO-DMT 5-MeO-DPT 5-MeO-EiPT 5-MeO-EPT 5-MeO-MALT 5-MeO-MET 5-MeO-MiPT 5-MeO-NMT 5-MeO-pyr-T 5-MeO-NBpBrT 5-MeO-T-NBOMe 5-MeS-DMT 5-Methoxytryptamine (5-MT; mexamine) 5-Methyl-DMT 5-Methyltryptamine 5-MT-NB3OMe 5-(Nonyloxy)tryptamine 5,6-MeO-MiPT 5,6-MDO-DiPT 5,6-MDO-DMT 5,6-MDO-MiPT 5,6-DHT 5,7-DHT 6-Fluoro-DMT 6-MeO-DMT 7-Methyl-DMT Acetryptine (5-AT) Aeruginascin (4-PO-TMT) AGH-107 AGH-192 AH-494 ALiPT Alpertine Baeocystin (4-PO-NMT) Benzotript (4-chlorobenzoyl-L-tryptophan) Bufotenidine (5-HTQ) Bufotenin (5-HO-DMT) Convolutindole A CP-132,484 DALT DBT Desformylflustrabromine DET DiPT DMT DPT E-6801 E-6837 EiPT EMDT EPT Ethocybin (4-PO-DET) FGIN-127 FGIN-143 FT-104 HIOC Idalopirdine Indolylethylfentanyl Indorenate Iprocin (4-HO-DiPT) Lespedamine MET Methylbutyltryptamine Miprocin (4-HO-MiPT) MiPT MPT Milipertine MS-245 MSBT N-Feruloylserotonin (moschamine) NET NMT Norbaeocystin (4-PO-T) NTBT O-4310 O-Pivalylbufotenine Oxypertine PiPT Psilacetin (O-acetylpsilocin; 4-AcO-DMT) Psilocin (4-HO-DMT) Psilocybin (4-PO-DMT) Pyr-T RS134-49 Serotonin (5-HT) Solypertine ST-1936 Tryptamine Tryptophan Yuremamine Z2876442907
N-Acetyltryptamines	2-Iodomelatonin 2-Phenylmelatonin 5-Methoxyluzindole 6-Chloromelatonin 6-Fluoromelatonin 6-Hydroxymelatonin 6-Methoxymelatonin 6,7-Dichloro-2-methylmelatonin α-Methylmelatonin Luzindole Melatonin Normelatonin (N-acetylserotonin; NAS) N-Acetyltryptamine N-Butanoylmelatonin N-Propionylmelatonin Piromelatine TIK-301
α-Alkyltryptamines	2,α-DMT 4-HO-αMT 4-HO-MPMI (lucigenol) 4-Me-αET 4-Me-αMT 5-Chloro-αMT 5-Ethoxy-αMT 5-Fluoro-αET 5-Fluoro-αMT 5-iPrO-αMT 5-MeO-α,N,N-TMT 5-MeO-αET 5-MeO-αMT 5-MeO-MPMI 5-Methyl-αET 6-Fluoro-αMT 7-Chloro-αMT 7-Methyl-αET α-Methyl-5-HTP α-Methylmelatonin α-Methylserotonin (5-HO-αMT) α-Methyltryptophan (αMTP) α,N-DMT (N-methyl-αMT) α,N,N-TMT α,N,O-TMS αET (etryptamine) αMT AL-37350A (4,5-DHP-αMT) BNC-210 BW-723C86 CP-135807 IPAP (α,N-DPT) MPMI
Triptans	Almotriptan Donitriptan Eletriptan Frovatriptan L-694247 Rizatriptan Sumatriptan Zolmitriptan
Cyclized tryptamines	Bay R 1531 Ciclindole Cyclic 3-OHM Ergolines and lysergamides (e.g., LSD) Flucindole Harmala alkaloids and β-carbolines (e.g., 6-MeO-THH, 9-Me-BC, β-carboline (norharman), harmaline, harmalol, harmane, harmine, pinoline, tetrahydroharmine, tryptoline) Iboga alkaloids and related (e.g., DM-506 (ibogaminalog), ibogaine, ibogamine, noribogaine, tabernanthalog, tabernanthine) Metralindole NDTDI PHA-57378 PNU-22394 PNU-181731 RU-28306 Yohimbans (e.g., yohimbine, rauwolscine, spegatrine, corynanthine, ajmalicine, reserpine, deserpidine, rescinnamine)
Related compounds	2-Azapsilocin 4-Aza-5-MeO-DPT 5-Aza-4-MeO-DiPT 5-HIAA 5-HIAL 5-HITCA 5-MIAL 7-Aza-5-MeO-DiPT AAZ-A-154 AL-34662 AL-38022A BRL-54443 CP-94253 EMD-386088 I-32 IAL Latrepirdine LY-367265 Pirlindole (R)-69 (3IQ) Ro60-0175 Ro60-0213 RU-24,969 Sertindole SN-22 Substituted benzofurans (e.g., 3-APB, 5-MeO-DiBF, BPAP, dimemebfe, mebfap) Tepirindole Tetrindole Triptans (e.g., avitriptan, LY-334370, naratriptan) VER-3323 VU6067416 YM-348

See also

References