Synthesis and SAR of derivatives based on 2-biarylethylimidazole as bombesin receptor subtype-3 (BRS-3) agonists for the treatment of obesity
作者:Jian Liu、Shuwen He、Tianying Jian、Peter H. Dobbelaar、Iyassu K. Sebhat、Linus S. Lin、Allan Goodman、Cheng Guo、Peter R. Guzzo、Mark Hadden、Alan J. Henderson、Kevin Pattamana、Megan Ruenz、Bruce J Sargent、Brian Swenson、Larry Yet、Constantin Tamvakopoulos、Qianping Peng、Jie Pan、Yanqing Kan、Oksana Palyha、Theresa M. Kelly、Xiao-Ming Guan、Andrew D. Howard、Donald J. Marsh、Joseph M. Metzger、Marc L. Reitman、Matthew J. Wyvratt、Ravi P. Nargund
DOI:10.1016/j.bmcl.2010.02.076
日期:2010.4
This Letter describes a series of potent and selective BRS-3 agonists containing a biarylethylimidazole pharmacophore. Extensive SAR studies were carried out with different aryl substitutions. This work led to the identification of a compound 2-2-[4-(pyridin-2-yl) phenyl] ethyl}-5-(2,2-dimethylbutyl)-1H-imidazole 9 with excellent binding affinity (IC(50) = 18 nM, hBRS-3) and functional agonist activity (EC(50) = 47 nM, 99% activation). After oral administration, compound 9 had sufficient exposure in diet induced obese mice to demonstrate efficacy in lowering food intake and body weight via BRS-3 activation. (C) 2010 Elsevier Ltd. All rights reserved.