Inhibitors of HIV-1 attachment. Part 11: The discovery and structure–activity relationships associated with 4,6-diazaindole cores
作者:John A. Bender、Zhong Yang、Betsy Eggers、Yi-Fei Gong、Pin-Fang Lin、Dawn D. Parker、Sandhya Rahematpura、Ming Zheng、Nicholas A. Meanwell、John F. Kadow
DOI:10.1016/j.bmcl.2012.10.118
日期:2013.1
A series of HIV-1 attachment inhibitors containing a 4,6-diazaindole core were examined in an effort to identify a compound which improved upon the potency and oral exposure of BMS-488043 (2). BMS-488043 (2) is a 6-azaindole-based HIV-1 attachment inhibitor which established proof-of-concept for this mechanism in human clinical studies but required high doses and concomitant administration of a high fat meal to achieve efficacious exposures. Based on previous studies in indole and azaindole scaffolds, SAR investigation was concentrated around the key 7-position in the 4,6-diazaindole series and led to the discovery of molecules with 5- to 20-fold increases in potency and three-to seven-fold increases in exposure over 2 in a rat PK studies. (C) 2012 Elsevier Ltd. All rights reserved.