Synthesis and Biological Evaluation of Novel Homocamptothecins Conjugating with Dihydropyrimidine Derivatives as Potent Topoisomerase I Inhibitors
作者:Lingjian Zhu、Pengfei Cheng、Ning Lei、Jianzhong Yao、Chunquan Sheng、Chunlin Zhuang、Wei Guo、Wenfeng Liu、Yongqiang Zhang、Guoqiang Dong、Shengzhang Wang、Zhenyuan Miao、Wannian Zhang
DOI:10.1002/ardp.201000402
日期:2011.11
Homocamptothecin (hCPT) is a camptothecin (CPT) homologue with the insertion of a methylene (CH2) spacer between the alcohol moiety and carbonyl group of the classical six‐membered α‐hydroxylactone ring. This modification provides higher lactone stability and did not impair its activity against topoisomerase I (Topo I), but rather appears to improve it compared to CPT. In an attempt to improve the
高喜树碱 (hCPT) 是喜树碱 (CPT) 同系物,在经典六元α-羟基内酯环的醇部分和羰基之间插入了一个亚甲基 (CH2) 间隔基。这种修饰提供了更高的内酯稳定性,并且不会削弱其对拓扑异构酶 I (Topo I) 的活性,但与 CPT 相比似乎有所改善。为了提高高喜树碱的抗肿瘤活性,基于7-甲酰基高喜树碱与不同二氢嘧啶衍生物偶联的合成路线,设计并合成了一系列与二氢嘧啶(DHPM)衍生物偶联的新型hCPT衍生物。大多数合成的化合物对肿瘤细胞系 A549、MDA-MB-435 和 HCT116 表现出良好的抗增殖活性。此外,