Synthesis and Biological Evaluation of 7-Alkenyl Homocamptothecins as Potent Topoisomerase I Inhibitors
作者:Lingjian Zhu、Xianghua Zhang、Ning Lei、Wenfeng Liu、Zhenyuan Miao、Chunlin Zhuang、Chunquan Sheng、Wei Guo、Guoqiang Dong、Jianzhong Yao、Pengfei Cheng、Wannian Zhang
DOI:10.1002/cbdv.201100195
日期:2012.6
Homocamptothecin (hCPT) is a camptothecin (CPT) derivative with a seven‐membered β‐hydroxylactone E ring, which shows higher lactone stability and improves topoisomerase I (Topo I) inhibition activity. In an attempt to improve the antitumor activity of homocamptothecins, a series of 7‐alkenyl‐homocamptothecin derivatives was designed and synthesized based on a semisynthetic route starting from CPT
Homocamptothecin (hCPT) 是一种喜树碱 (CPT) 衍生物,具有七元 β-羟基内酯 E 环,具有更高的内酯稳定性并提高拓扑异构酶 I (Topo I) 抑制活性。为了提高高喜树碱的抗肿瘤活性,基于以CPT为原料的半合成路线,设计并合成了一系列7-烯基-高喜树碱衍生物。大多数合成的化合物对 A-549 肿瘤细胞系的细胞毒活性高于拓扑替康 (TPT)。一些化合物如 2a 和 2o 显示出广泛的体外抗肿瘤谱,并表现出优异的 Topo I 抑制活性。