Synthesis and biological evaluation of novel 7-acyl homocamptothecins as Topoisomerase I inhibitors
作者:Wenfeng Liu、Lingjian Zhu、Wei Guo、Chunlin Zhuang、Yongqiang Zhang、Chunquan Sheng、Pengfei Cheng、Jianzhong Yao、Wenya Wang、Guoqiang Dong、Shengzheng Wang、Zhenyuan Miao、Wannian Zhang
DOI:10.1016/j.ejmech.2011.03.024
日期:2011.6
(TPT). Furthermore, compounds 6d, 6e, and 6k showed highly potent inhibitory activities with the IC50 values from less than 1 nM to 2.2 nM. In Topoisomerase I (Topo I)-induced DNA cleavage assay, compounds 6a, 6d, and 6k, as compared to CPT, revealed higher Topo I inhibitory activity.
设计并合成了一系列新的高喜树碱7-酰基衍生物(hCPT),目的是通过10-甲氧基高喜树碱的Minisci自由基反应来提高hCPT的抗肿瘤活性。评估了所有化合物对三种癌细胞系(A549,MDA-MB-435和HCT116)的体外细胞毒性。对于MDA-MB-435细胞系,化合物6a,6b,6k和所有7-烷基羰基高喜树碱衍生物的体外抑制活性均高于拓扑替康(TPT)。此外,化合物6d,6e和6k对IC 50表现出高度有效的抑制活性值从小于1 nM到2.2 nM。在拓扑异构酶I(Topo I)诱导的DNA裂解测定中,与CPT相比,化合物6a,6d和6k显示出更高的Topo I抑制活性。