Design, synthesis, and in vitro hMAO-B inhibitory evaluation of some 1-methyl-3,5-diphenyl-4,5-dihydro-1H-pyrazoles

Bioorganic & Medicinal Chemistry Letters
2013.0

Abstract

A series of 1-methyl-3,5-diphenyl-4,5-dihydro-1H-pyrazoles (3a-k and 4a-u) were designed, synthesized, and evaluated for their inhibitory efficacy towards the two hMAO isoforms. Most of the derivatives were found to be potent and selective hMAO-B inhibitors. In particular, derivative 3g showed greater hMAO-B affinity than selective inhibitor selegiline coupled with high selectivity index (SI=145). The most selective hMAO-B inhibitor was the 3-methyl analogue 3f with an SI higher than 909.

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