摘要:
A novel imidazobenzazepine template (5a) with potent dual H-1/5-HT2A antagonist activity was identified. Application of a zwitterionic approach to this poorly selective and poorly developable starting point successfully delivered a class of high quality leads, 3-[4-(3-R-1-2-R-5H-imidazo[1,2-b][2]benzazepin-11-yl)-1-piperazinyl]-2,2-dimethylpropanoic acids (e. g., 9, 19, 20, and 21), characterized by potent and balanced H-1/5-HT2A receptor antagonist activities and good developability profiles. (C) 2010 Elsevier Ltd. All rights reserved.