Hypoxia-Selective Antitumor Agents. 9. Structure-Activity Relationships for Hypoxia-Selective Cytotoxicity among Analogs of 5-[N,N-Bis(2-chloroethyl)amino]-2,4-dinitrobenzamide
作者:Brian D. Palmer、William R. Wilson、Graham J. Atwell、Diane Schultz、Xing Z. Xu、William A. Denny
DOI:10.1021/jm00040a009
日期:1994.7
potency and hypoxic selectivity. Modification of the mustard leaving groups or replacement of the carboxamide moiety provided some compounds with superior potency, but only the mixed chloro/mesylate mustard 20 provided a gain in potency relative to solubility while retaining the hypoxic selectivity of 6. These nitrogen mustards did not show the remarkable activity demonstrated by the related aziridine
为了寻找保留高缺氧性的化合物,已经制备并评估了一系列新型缺氧选择性细胞毒素5- [N,N-双(2-氯乙基)氨基] -2,4-二硝基苯甲酰胺的类似物(6)。选择性但具有增强的效能和/或水溶性。具有可电离或偶极羧酰胺侧链的几种类似物显示出改善的溶解度,但通常具有降低的细胞毒性和低氧选择性。芥菜离去基团的修饰或羧酰胺部分的取代为某些化合物提供了卓越的效力,但只有混合的氯/甲磺酸芥菜碱20相对于溶解度提供了效力,同时保持了6的低氧选择性。相关的氮丙啶7 [CB 1954,5-(N-氮丙啶基)-2 [4-二硝基苯甲酰胺]在Walker 256腺癌细胞中,并且不是DT-diaphorase的有效底物,后者通过Walker细胞中的需氧硝化作用激活了后者。二硝基苯甲酰胺芥末中低氧选择性的变化似乎不是由于该酶对活化的敏感性不同。沃克细胞对单(2-氯乙基)类似物26表现出中等敏感性,但对相关的半芥子味27没有