Design, synthesis, and preliminary evaluation of 4-(6-(3-nitroguanidino)hexanamido)pyrrolidine derivatives as potential iNOS inhibitors

Bioorganic & Medicinal Chemistry
2008.0

Abstract

A series of 4-(6-(3-nitroguanidino)hexanamido)pyrrolidine derivatives were synthesized and evaluated for their abilities to inhibit inducible nitric oxide synthase (iNOS) isoform. All target compounds were prepared in 11 steps from commercially trans-4-hydroxy-L-proline. The preliminary pharmacological test showed that three compounds, 17, 21, and 30, have the good potency (IC(50)=2.36, 2.68, 2.5 microM, respectively) which are compared to the NOS inhibitor N(G)-nitroarginine(L-NNA) (IC(50)=14.74 microM), and could be used as lead compounds for exploring new iNOS inhibitors in the future.

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