Imidazolone–amide bridges and their effects on tubulin polymerization in cis-locked vinylogous combretastatin-A4 analogues: Synthesis and biological evaluation
作者:Yao-Wu Li、Jia Liu、Na Liu、Duo Shi、Xiao-Tian Zhou、Jia-Guo Lv、Ju Zhu、Can-Hui Zheng、You-Jun Zhou
DOI:10.1016/j.bmc.2011.03.068
日期:2011.6
A series of novel combretastatin-A4 analogues in which the cis-olefinic bridge is replaced by an imidazolone-amide were synthesized, and their cytotoxicity and tubulin-polymerization inhibitory activities were evaluated. These compounds appear to be potential tubulin-polymerization inhibitors. Compounds 10, 9b and 9c, bearing 3'-NH2-4'-OCH3, 4'-CH3 and 3'-CH3-substituted 1-phenyl B-ring, confer optimal bioactivity. The binding modes of these compounds to tubulin were obtained by molecular docking, which can explain the compounds' structure-activity relationship. The studies presented here provide a new structural type for the development of novel antitumor agents. (C) 2011 Elsevier Ltd. All rights reserved.