Potential Anxiolytic Agents. Part 4: Novel Orally-Active N5-Substituted Pyrido[1,2-a]benzimidazoles with High GABA-A Receptor Affinity
作者:Alfonzo D Jordan、Anil H Vaidya、Daniel I Rosenthal、Barry Dubinsky、Cheryl P Kordik、Pauline J Sanfilippo、Wu-Nan Wu、Allen B Reitz
DOI:10.1016/s0960-894x(02)00463-8
日期:2002.9
A series of pyrido[1,2-a]benzimidazoles (PBIs) with substitution on the N-5-nitrogen has been synthesized and found to possess high affinity for the benzodiazepine (BZD) site on the GABA-A receptor. The compounds evaluated include those bearing a heteroalkyl group and heterocyclic rings. The most promising of these compounds is ethoxymethyl analogue 24, which has an IC50 of 0.1 nM for the BZD site on the GABA-A receptor and has been advanced to human clinical trials. (C) 2002 Elsevier Science Ltd. All rights reserved.