作者:Bihong Hong、Guangrong Meng、Hanyi Tan、Jiajun Li、Kaimin Kong、Qian Zhang
DOI:10.1007/s00044-019-02342-4
日期:2019.6
A novel series of A-ring modified hexacyclic camptothecin derivatives containing a pyranone ring fused at the 9-positions and 10-positions were designed and synthesized. These new derivatives were screened against four human tumor cell lines and the results showed most of the compounds possessed comparable cytotoxicity to 10-hydroxycamptothecin (HCPT) in vitro. The pyranono-fused derivatives, except
设计并合成了一系列新颖的A环修饰的六环喜树碱衍生物,它们含有在9位和10位稠合的吡喃酮环。这些新的衍生物针对四种人类肿瘤细胞系进行了筛选,结果表明大多数化合物在体外具有与10-羟基喜树碱(HCPT)相当的细胞毒性。除了在4'-位置带有甲氧基甲酰基的吡喃并稠合的衍生物(12)外,与饱和的二氢吡喃并喜树碱(6和7)具有相似的抑制作用。),并且与拓扑替康(TPT)相比具有更高的细胞毒活性。这些结果表明饱和和不饱和稠合吡喃环不会破坏喜树碱和DNA碱基对之间的碱基堆积,也不会破坏化合物与拓扑异构酶I之间的相互作用。