4-[(2-ketochromene-3-carbonyl)amino]benzoate 

Potent inhibitor of two izoforms of human monoamine oxidaze,  namely hMAO-A and hMAO-B,

with IC₅₀ = 9.97±0.87 μM and 1.14±0.09 μM, respectively.

OTAVAchemicals Catalogue Number:   7113231449

CAS Registry Number:  N/A

Purity: >95%

Ref.: Chimenti et al. Synthesis, Molecular Modeling, and Selective Inhibitory Activity against Human Monoamine Oxidases of 3-Carboxamido-7-Substituted Coumarins. J. Med. Chem. (2009), 52, 1935–1942

Abstract: A large series of 3-carboxamido-7-substituted coumarins have been synthesized and tested in vitro for their human monoamine oxidase A and B (hMAO-A and hMAO-B) inhibitory activity. Taking into account all the relevant structural information on MAOs reported in the literature, we made some changes in the coumarin nucleus and examined with particular attention the effect on activity and selectivity of substituting at position 3 with N-aryl or N-alkyl carboxamide and at position 7 with a benzyloxy or a 4'-F-benzyloxy group. Some of the assayed compounds proved to be potent, selective inhibitors of hMAO-B with IC₅₀ values in the micromolar range. To better understand the enzyme inhibitor interaction and to explain the selectivity of the most active compounds toward hMAOs, molecular modeling studies were carried out on new, high resolution, hMAO-A and hMAO-B crystallographic structures.