Optimization of heterocyclic substituted benzenesulfonamides as novel carbonic anhydrase IX inhibitors and their structure activity relationship
作者:Rui Gao、Sha Liao、Chen Zhang、Weilong Zhu、Liyan Wang、Jin Huang、Zhenjiang Zhao、Honglin Li、Xuhong Qian、Yufang Xu
DOI:10.1016/j.ejmech.2013.01.030
日期:2013.4
In this study, starting from a lead compound discovered by virtual screening, a series of novel hetero-cyclic substituted benzenesulfonamides were designed and synthesized as new carbonic anhydrase IX (CA IX) inhibitors. Some compounds exhibited potent inhibitory effects against CA IX (in the low nanomolar range) as well as high selectivity against other carbonic anhydrase isozymes (CA I and CA II). The most potent and selective compound 27 could inhibit CA IX in the subnanomolar level with IC50 of 0.48 nM, which increased the potency by about 40-fold against CA IX compared with the lead compound 26, and presented more than 10(3) fold selectivity over CA I and CA II. The structure activity relationship (SAR) based on the docking experiments further elucidated the effects of the compounds on the bioactivity and selectivity. (C) 2013 Elsevier Masson SAS. All rights reserved.