An efficient and convergent synthesis of the potent and selective H3 antagonist ABT-239
摘要:
An efficient and convergent process for the preparation of a potent and selective H-3 receptor antagonist, ABT-239, 1A was accomplished with an overall yield of 64%. The key step in the synthesis is a Sonogashira coupling/cyclization reaction of 1-but-3-ynyl-2-(R)-methylpyrrolidine (9) with 4'-hydroxy-3'-iodo-biphenyl-4-carbonitrile (3). Additionally, the key amine component 2-(R)-methylpyrrolidine (7) was effectively synthesized from the readily available Boc-L-prolinol with a simple catalytical hydrogenolysis as the key step. This column chromatography-free process is highlighted by several simple work-up and purification procedures and is amendable to the large-scale preparation of 1A. (c) 2006 Elsevier Ltd. All rights reserved.
Fused bicyclic-substituted amines as histamine-3 receptor ligands
申请人:——
公开号:US20040248899A1
公开(公告)日:2004-12-09
Compounds of formula (I)
1
are useful in treating conditions or disorders prevented by or ameliorated by histamine-3 receptor ligands. Also disclosed are pharmaceutical compositions comprising the histamine-3 receptor ligands and methods for using such compounds and compositions.
Synthesis and SAR of 5-Amino- and 5-(Aminomethyl)benzofuran Histamine H<sub>3</sub> Receptor Antagonists with Improved Potency
作者:Minghua Sun、Chen Zhao、Gregory A. Gfesser、Christine Thiffault、Thomas R. Miller、Kennan Marsh、Jill Wetter、Michael Curtis、Ramin Faghih、Timothy A. Esbenshade、Arthur A. Hancock、Marlon Cowart
DOI:10.1021/jm0504398
日期:2005.10.1
A new series of H3receptorantagonists was discovered with nanomolar and subnanomolar affinities at human and rat H3receptors. Starting from an earlier, more structurally limited series of benzofurans, the present series of compounds demonstrated increased structural variety and flexibility with greater in vitro potency. One compound in particular, [2-[2-(2-(R)-methylpyrrolidin-1-yl)ethyl]benzof
Novel amines as histamine-3 receptor ligands and their therapeutic applications
申请人:——
公开号:US20020169188A1
公开(公告)日:2002-11-14
Compounds of formula (I)
1
or a pharmaceutically acceptable salts or prodrug thereof which are useful for the modulation of the histamine-3 receptors in mammals and which are useful for the treatment of disorders ameliorated by histamine-3 receptor ligands.
Process for preparing amine-substituted benzofurans
申请人:——
公开号:US20040054185A1
公开(公告)日:2004-03-18
The present invention relates to processes for preparing amine substituted benzofurans, and more particularly 4-(2-{2-[(2R)-2-methyl-1-pyrrolidinyl]ethyl}-1-benzofuran-5-yl)benzonitrile, and salts thereof. Compounds prepared by the processes of the invention have demonstrated activity as histamine-3 receptor ligands.
Synthesis and biological evaluation of XB-1 analogues as novel histamine H3 receptor antagonists and neuroprotective agents
作者:Xiaofeng Bao、Yanyan Jin、Xiaolu Liu、Hong Liao、Luyong Zhang、Tao Pang
DOI:10.1039/c3ra46392c
日期:——
A novel class of H3 receptor antagonists, XB-1 analogues based on benzophenone or oxydibenzene scaffolds were synthesized, and their biological activities were evaluated to determine their in vitro neuroprotective effects against Aβ25–35-induced damage in primary cortical neurons and against glutamate-induced neuronal injury in primary cerebellar granule neurons. The results indicated that all of the tested analogues displayed neuroprotective activity at 0.1 μM or 1 μM. These findings may provide new insights into the development of novel promising H3 receptor antagonists with potential neuroprotective activity.