Virtual screening-driven discovery of dual 5-HT6/5-HT2A receptor ligands with pro-cognitive properties
摘要:
A virtual screening campaign aimed at finding structurally new compounds active at 5-HT6R provided a set of candidates. Among those, one structure, 4-(5-{[(2-{5-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl}ethyl) amino]methyl}furan-2-yl)phenol (1, 5-HT6R K-i = 91 nM), was selected as a hit for further optimization. As expected, the chemical scaffold of selected compound was significantly different from all the serotonin receptor ligands published to date. Synthetic efforts, supported by molecular modelling, provided 43 compounds representing different substitution patterns. The derivative 42, 4-(5-{[(2-{5-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl}ethyl)amino]methyl}furan-2-yl)phenol (5-HT6R K-j= 25, 5-HT2AR K-i = 32 nM), was selected as a lead and showed a good brain/plasma concentration profile, and it reversed phencyclidine-induced memory impairment. Considering the unique activity profile, the obtained series might be a good starting point for the development of a novel antipsychotic or antidepressant with procognitive properties. (C) 2019 The Authors. Published by Elsevier Masson SAS.
Aza-Tryptamine Substrates in Monoterpene Indole Alkaloid Biosynthesis
作者:Hyang-Yeol Lee、Nancy Yerkes、Sarah E. O'Connor
DOI:10.1016/j.chembiol.2009.11.016
日期:2009.12
as the starting substrate for a variety of alkaloid biosynthetic pathways, by replacing the indole with one of four aza-indole isomers. We show that two aza-tryptamine substrates can be successfully incorporated into the products of the monoterpeneindolealkaloid pathway inCatharanthus roseus. Use of unnatural heterocycles in precursor-directed biosynthesis, in both microbial and plant natural product pathways
5-ZATRYPTAMINE ANALOGS AS h5-HT6 SEROTONIN RECEPTOR LIGANDS
作者:Manik Pullagurla、Małgorzata Dukat、Bryan L. Roth、Vincent Setola、Richard A. Glennon
DOI:10.1007/s00044-004-0121-8
日期:2005.1
5-Aza analogs were prepared of several tryptamine derivatives and a skatole derivative known to bind at human 5-HT6 receptors and evaluated to determine if they bind in a manner similar to their indolic analogs. In general, the azatryptamines did not behave exactly like their tryptamine counterparts, but the behavior of NI-benzenesulfonyl analogs was reminiscent of the known arylsulfonyltryptamines. For example, N-1-(4-aminobenzenesulfonyl)-5-azaskatole (18; K-i = 41 nM) displayed an affinity comparable to N-1-(4-aminobenzenesulfonyl)skatole.
Microwave-assisted synthesis of 5-carboxymethoxy- N -acetyltryptamine derivatives
The synthesis of the indole core structure was investigated using microwave irradiation. The experimental microwave conditions described allow significant rate enhancements and good yields compared to conventional reaction conditions. (C) 2002 Elsevier Science Ltd. All rights reserved.
Synthesis of New Melatoninergic Ligands Including Azaindole Moiety
[GRAPHICS]The synthesis of the indole skeleton of new melatoninergic analogues was realized using solid-phase methodology in association with microwave irradiation. This combination speeds up the solid-phase drug discovery process in rigorously established conditions.