Isoform-Selective Substrates of Nitric Oxide Synthase

Journal of Medicinal Chemistry
2003.0

Abstract

Because of the double-edged nature of NO, the development of isoform-selective NOS substrates is a highly desirable goal. Given the striking similarity in the heme active sites of the three NOS isoforms, it presents an challenging problem. Several N-aryl-N'-hydroxyguanidines have recently been shown as substrates that are selective for iNOS over nNOS. Here, we report the first success that 3 is a good substrate for nNOS (70% activity of NOHA, K(m) approximately 40 +/- 6 microM) over iNOS.

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