Novel hexacyclic camptothecin derivatives. Part 1: Synthesis and cytotoxicity of camptothecins with an A-ring fused 1,3-oxazine ring
作者:Sheng Wang、Yuyan Li、Yonghui Liu、Aijun Lu、Qidong You
DOI:10.1016/j.bmcl.2008.05.103
日期:2008.7
modified hexacyclic camptothecin derivatives containing a 1,3-oxazine ring were first designed and synthesized. All of the hexacyclic camptothecins were assayed for in vitro cytotoxicity against nine human cancer cell lines. Among these compounds, 9b and 9c showed most potent cytotoxicity against several cell lines. Particularly, 9c was about 13-fold more potent than camptothecin, and about sixfold
首先设计并合成了一系列新的含有1,3-恶嗪环的A环修饰的六环喜树碱衍生物。分析了所有六环喜树碱对九种人类癌细胞系的体外细胞毒性。在这些化合物中,9b和9c对几种细胞系表现出最强的细胞毒性。特别地,对于HEPG-2,9c的效力比喜树碱强约13倍,并且比拓扑替康强约六倍。此外,还发现对于大多数细胞系,N-烷基取代的衍生物比N-芳基和N-苄基取代的化合物更有效。