2-(4-Methylsulfonylaminophenyl) propanamide TRPV1 antagonists: Structure–activity relationships in the B and C-regions
作者:Wei Sun、Keliang Liu、HyungChul Ryu、Dong Wook Kang、Yong Soo Kim、Myeong Seop Kim、Yongsung Cho、Rahul S. Bhondwe、Shivaji A. Thorat、Ho Shin Kim、Larry V. Pearce、Vladimir A. Pavlyukovets、Richard Tran、Matthew A. Morgan、Jozsef Lazar、Christopher B. Ryder、Attila Toth、Peter M. Blumberg、Jeewoo Lee
DOI:10.1016/j.bmc.2011.12.014
日期:2012.2
On the basis of the previous lead N-4-t-butylbenzyl 2-(3-fluoro-4-methylsulfonylaminophenyl) propanamide (3) as a potent TRPV1 antagonist, structure-activity relationships for the B (propanamide part) and C-region (4-t-butylbenzyl part) have been investigated for rTRPV1 in CHO cells. The B-region was modified with dimethyl, cyclopropyl and reverse amides and then the C-region was replaced with 4-substituted phenyl, aryl alkyl and diaryl alkyl derivatives. Among them, compound 50 showed high binding affinity with K-i = 21.5 nM, which was twofold more potent than 3 and compound 54 exhibited potent antagonism with K-i(ant) = 8.0 nM comparable to 3. (C) 2011 Elsevier Ltd. All rights reserved.