Camptothecin and Minor-Groove Binder Hybrid Molecules: Synthesis, Inhibition of Topoisomerase I, and Anticancer Cytotoxicity <i>in Vitro</i>
作者:Rulin Zhao、Naim H. Al-Said、Daniel L. Sternbach、J. William Lown
DOI:10.1021/jm9605804
日期:1997.1.1
The synthesis, characterization, inhibitory activity against topoisomerase I, and biological evaluation of a series of 14 camptothecin derivatives of polypyrrolecarboxamide (lexitropsin) conjugates of two structural classes: (A) camptothecin-NHCO-lexitropsin 44-51 and (B) camptothecin-CONH-lexitropsin 38-43 are described. All 16 compounds tested, 14 conjugates plus two functionalized camptothecin controls
拓扑结构异构酶I的合成,表征,抑制活性,以及一系列两种结构类型的聚吡咯甲酰胺(lexitropsin)缀合物的一系列14种喜树碱衍生物的生物学评估:(A)喜树碱-NHCO-lexitropsin 44-51和(B)喜树碱-CONH描述了-lexitropsin 38-43。测试的所有16种化合物,14种结合物以及2个功能化的喜树碱对照物均在1.12-16.6 microM的浓度范围内抑制拓扑异构酶I,拓扑异构酶I根据活性分为三个不同的类别。最具活性的酶抑制剂属于具有阳离子二甲基ami基或中性酰胺端基的A类结构。通常,B类偶联物在抑制拓扑异构酶I方面的效果较差。针对四种代表性的人类肿瘤细胞系:SKOV3,SKLVB,HT29和KB。所有16种药物相对于KB细胞系均具有可测量的IC50值,并分为两类,IC50值为0.049-0.66 microM(主要为B类结构)和1.0-48 micro