Synthesis and evaluation of aplysinopsin analogs as inhibitors of human monoamine oxidase A and B
作者:Kevin Lewellyn、Dobroslawa Bialonska、Narayan D. Chaurasiya、Babu L. Tekwani、Jordan K. Zjawiony
DOI:10.1016/j.bmcl.2012.06.058
日期:2012.8
Aplysinopsins are tryptophan-derived natural products that have been isolated from a variety of marine organisms. Previous studies have shown aplysinopsin analogs to possess a variety of biological activities, including modulation of neurotransmissions. A series of fifty aplysinopsin analogs was synthesized and assayed for monoamine oxidase A and B inhibitory activity. Three compounds displayed significant MAO inhibitory activity and selectivity. The compound (E)-5-[(6-bromo-1H-indol-3-yl) methylene]-2-imino-1,3-dimethylimidazolidin-4-one (3x) possessed an IC50 of 5.6 nM at MAO-A and had a selectivity index of 80.24. An SAR study revealed that multiple N-methylations, one of which should be at position N-2', and bromination at C-5 or C-6 are important factors for MAO-A potency and selectivity. (c) 2012 Elsevier Ltd. All rights reserved.