作者:Qingyong Li、Hongyan Lv、Yuangang Zu、Zhenhuan Qu、Liping Yao、Lin Su、Chen Liu、Limin Wang
DOI:10.1016/j.bmcl.2008.11.031
日期:2009.1
decrease the toxicity and improve the stability of labile lactone ring of camptothecin, nitrogenous heterocyclic aromatic groups were introduced into 20-position of camptothecin and seventeen new 20s-camptothecin derivatives were obtained in quantitative yield. The cytotoxicity in vitro on three cancer cell lines and the stability of the lactone in phosphate-buffered solution (PBS) of these derivatives
为了降低毒性,提高喜树碱不稳定的内酯环的稳定性,在喜树碱的20位上引入了含氮杂环芳基,定量获得了17种新的20s-喜树碱衍生物。评价了这些衍生物在三种癌细胞系上的体外细胞毒性和内酯在磷酸盐缓冲液(PBS)中的稳定性。这些测试的衍生物大多数具有比拓扑替康更好的细胞毒性。类似物6,12在我们制备的所有衍生物中均表现出最佳的体内抗肿瘤活性。结果表明,在喜树碱的10或20位引入吡唑可以促进体内外的抗肿瘤活性,同时大大提高内酯的稳定性。