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.
Design of Cancer-Specific Antitumor Agents Based on Aziridinylcyclopent[<i>b</i>]indoloquinones
作者:Chengguo Xing、Ping Wu、Edward B. Skibo、Robert T. Dorr
DOI:10.1021/jm990466w
日期:2000.2.1
The merits of N-unsubstituted indoles and cyclopent[b]indoles as DNA-directed reductivealkylatingagents are described. These systems represent a departure from N-substituted and pyrrolo[1, 2-a]-fused systems such as the mitomycins and mitosenes. The cyclopent[b]indole-based aziridinylquinone system, when bearing an acetate leaving group with or without an N-acetyl group, was cytotoxic and displayed