Cytotoxic N-unsubstituted indoles and cyclopent(b)indoles and method of making and using same
申请人:——
公开号:US20040006054A1
公开(公告)日:2004-01-08
The merits of N-unsubstituted indoles and cyclopent[b]indoles as DNA-directed reductive alkylating agents are described. These systems represent a significant departure from N-substituted and pyrrolo[1,2-a] fused systems such as the mitomycins and mitosenes. The cyclopent[b]indole—based aziridinylquinone, when bearing an acetate leaving group, was found to be cytotoxic and displayed significant in vivo activity against syngeneic tumor implants. This particular analogue was unexpectedly superior to the others studied, both in terms of high specificity for the activating enzyme DT-diaphorase and in high % DNA alkylation. Alkylation by a quinone methide intermediate as well as by the aziridinyl group were examined for crosslinking. The possible metabolites of the most active indole species were prepared and found to retain cytotoxicity, strongly suggesting that in vivo activity could also be sustained. The indole systems in the present invention display selectivity for melanoma and for non small cell lung, colon, renal, and prostate cancers when administered in an effective amount. The cancer specificity observed is believed to pertain to differential substrate specificity for DT-diaphorase.
描述了N-未取代吲哚和环戊[b]吲哚作为DNA定向还原烷基化剂的优点。这些体系与N-取代和吡咯[1,2-a]融合体系(如丝菌素和丝菌烯)有显著不同。基于环戊[b]吲哚的氮杂环喹喙醌,当带有乙酸离去基团时,被发现具有细胞毒性,并对同基因肿瘤移植物显示出显著的体内活性。这种特定的类似物在高度特异性激活酶DT-二氧还酶和高DNA烷基化百分比方面意外地优于其他研究过的类似物。通过醌亚甲基中间体和环氧丙基基团进行了交联的烷基化研究。最活跃的吲哚物种的可能代谢产物已经制备并发现保留了细胞毒性,强烈暗示体内活性也可能持续存在。本发明中的吲哚体系在有效剂量下对黑色素瘤和非小细胞肺癌、结肠癌、肾癌和前列腺癌显示出选择性。观察到的癌症特异性被认为与DT-二氧还酶的不同底物特异性有关。