Nitro <i>seco</i> Analogues of the Duocarmycins Containing Sulfonate Leaving Groups as Hypoxia-Activated Prodrugs for Cancer Therapy
作者:Ralph J. Stevenson、William A. Denny、Moana Tercel、Frederik B. Pruijn、Amir Ashoorzadeh
DOI:10.1021/jm201717y
日期:2012.3.22
of 19 (5-nitro-2,3-dihydro-1H-benzo[e]indol-1-yl)methyl sulfonate prodrugs containing sulfonate leaving groups and 7-substituted electron-withdrawing groups is reported. These were designed to undergo hypoxia-selective metabolism to form potent DNA minor groove-alkylating agents. Analogues 17 and 24, containing the benzyl sulfonate leaving group and a neutral DNA minor groove-binding side chain, displayed
报道了19(5-硝基-2,3-二氢-1 H-苯并[ e ]吲哚-1-基)甲基磺酸盐前药的合成,该药物含有磺酸盐离去基团和7-取代的吸电子基团。这些被设计用于进行缺氧选择性代谢,以形成有效的DNA小沟烷基化剂。类似物17和24,包含磺酸苄酯离去基团和中性DNA小沟结合侧链,在体外抗增殖试验中显示HT29人癌细胞的缺氧细胞毒性比(HCR)> 1000。四个类似物在一组八种人类癌细胞系中维持较大的HCR。在克隆形成分析中,19HT29细胞的HCR显示为4090。还制备了十种可溶性磷酸盐前药,并以无毒剂量在体内,单独或与放射联合在SiHa人肿瘤异种移植物中进行了评估。化合物34和39的缺氧log 10细胞杀伤(LCK)分别为1.78和2.71,与先前报道的氯化物或溴化物类似物具有同等或更高的活性,因此显示出作为缺氧激活的前药的杰出前景。