Lamellarin-inspired potent topoisomerase I inhibitors with the unprecedented benzo[g][1]benzopyrano[4,3-b]indol-6(13H)-one scaffold
作者:Tsutomu Fukuda、Yusuke Nanjo、Masahiro Fujimoto、Kenyu Yoshida、Yuko Natsui、Fumito Ishibashi、Fumiyasu Okazaki、Hideto To、Masatomo Iwao
DOI:10.1016/j.bmc.2018.11.037
日期:2019.1
A new class of topoisomerase I inhibitors containing the unprecedented benzo[g][1]benzopyrano[4,3-b]indol-6(13H)-one (abbreviated as BBPI) ring system have been developed based on structure-activity relationship studies of the cytotoxic marine alkaloid lamellarin D. The pentacyclic BBPI scaffold was constructed from N-tert-butoxycarbonylpyrrole by sequential and regioselective functionalization of
基于结构-活性关系,开发了一种新型的拓扑异构酶I抑制剂,该抑制剂含有前所未有的苯并[ g ] [1]苯并吡喃并[4,3 - b ]吲哚-6(13 H)-一个(缩写为BBPI)环系统。细胞毒性生物碱海洋D.片螺素的五环BBPI支架从构造的研究ñ -叔由吡咯芯的顺序和区域选择性官能化-butoxycarbonylpyrrole使用针对锂化,传统的亲电取代,和钯催化的交叉偶联反应。支架进一步进行N-烷基化,然后对O-异丙基进行选择性脱保护,生成了一系列N-取代的BBPI衍生物。如此制备的BBPI在DNA弛豫测定中表现出有效的拓扑异构酶I抑制活性。BBPIs的活性高于lamellarin D和喜树碱;他们在由日本癌症研究基金会建立的39种人类癌细胞系中显示了有效的和选择性的抗增殖活性。COMPARE分析表明,BBPI的抑制模式与已知的拓扑异构酶I抑制剂(例如SN-38和TAS-103)具有很好的相