Antitumor agents. Part 186:11For part 185, see ref. [1]. Synthesis and biological evaluation of demethylcolchiceinamide analogues as cytotoxic DNA topoisomerase II inhibitors
作者:Jian Guan、Xiao-Kang Zhu、Yoko Tachibana、Kenneth F. Bastow、Arnold Brossi、Ernest Hamel、Kuo-Hsiung Lee
DOI:10.1016/s0968-0896(98)00165-5
日期:1998.11
Demethylation of colchiceinamide (2) and its analogues (3-10) afforded a novel class of mammalian DNA topoisomerase II inhibitors (2a-10a) without displaying tubulin inhibitory activity. All target compounds inhibited the catalytic activity of topoisomerase II at drug concentrations at 100 microM. An in vitro cytotoxicity assay indicated that compounds 3a and 8a were strong and tissue-selective cytotoxic
秋水仙酰胺(2)及其类似物(3-10)的去甲基化提供了一类新的哺乳动物DNA拓扑异构酶II抑制剂(2a-10a),而没有表现出微管蛋白抑制活性。在药物浓度为100 microM时,所有目标化合物均抑制拓扑异构酶II的催化活性。体外细胞毒性试验表明,化合物3a和8a对MCF-7乳腺癌细胞系(IC50分别为0.36和0.48微克/ mL)和CAKI-1肾癌细胞系( IC50分别为0.72和0.96微克/毫升。