natural products. No mechanism of action has been described for any member of the family. We report the synthesis of kibdelone C and several simplified analogs. Both enantiomers of kibdeleone C show low nanomolar cytotoxicity toward multiple human cancer cell lines. Moreover, several simplified derivatives with improved chemical stability display higher activity than the natural product itself. In
多环四氢
氧杂蒽酮包括一大类细胞毒性
天然产物。没有描述任何家族成员的作用机制。我们报告了 kibdelone C 和几种简化类似物的合成。kibdeleone C 的两种对映异构体对多种人类癌
细胞系都显示出低纳摩尔的细胞毒性。此外,一些具有改进
化学稳定性的简化衍
生物显示出比
天然产物本身更高的活性。体外研究排除了与 DNA 的相互作用或拓扑异构酶的抑制,这两者都是多环芳族化合物的常见作用方式。然而,细胞研究表明,kibdelone C 及其简化的衍
生物会破坏肌动蛋白 cytoseketon,而不直接结合肌动蛋白或影响其体外聚合。