Hypoxia-Selective Antitumor Agents. 16. Nitroarylmethyl Quaternary Salts as Bioreductive Prodrugs of the Alkylating Agent Mechlorethamine
作者:Moana Tercel、Alan E. Lee、Alison Hogg、Robert F. Anderson、Ho H. Lee、Bronwyn G. Siim、William A. Denny、William R. Wilson
DOI:10.1021/jm010202l
日期:2001.10.1
Nitrobenzyl quaternary salts of nitrogen mustards have been previously reported as hypoxia-selective cytotoxins. In this paper we describe the synthesis and evaluation of a series of heterocyclic analogues, including pyrrole, imidazole, thiophene, and pyrazole examples, chosen to cover a range of one-electron reduction potentials (from -277 to -511 mV) and substitution patterns. All quaternary salt
氮芥子碱的硝基苄基季盐先前已报道为低氧选择性细胞毒素。在本文中,我们描述了一系列杂环类似物的合成和评估,包括吡咯,咪唑,噻吩和吡唑的例子,这些例子被选择来涵盖一系列单电子还原电势(从-277至-511 mV)和取代模式。所有季盐化合物在体外的毒性均比甲乙胺低,并且在低氧条件下的毒性都比有氧条件下的毒性更高,尽管该系列中的差异差异很大。最有希望的类似物咪唑2在低氧的RIF-1细胞中表现出选择性的DNA交联,并且在体内与放射线或顺铂联合具有活性。但是,2在体内也产生了无法预测的毒性,