Synthesis, structure–activity relationships and molecular modeling studies of new indole inhibitors of monoamine oxidases A and B
作者:Giuseppe La Regina、Romano Silvestri、Valerio Gatti、Antonio Lavecchia、Ettore Novellino、Olivia Befani、Paola Turini、Enzo Agostinelli
DOI:10.1016/j.bmc.2008.09.072
日期:2008.11
New monoamine oxidase inhibitors were synthesized as indole analogues of a previously reported pyrrole series. Several compounds were potent MAO-A (12, 17, 19-22, 31, 36, and 37) or MAO-B (14, 20, 24, 38, 44, and 46) inhibitors, and had K(i) values in the nanomolar concentration range. In particular, 22 (K(i)=0.00092 microM, and SI=68,478) was exceptionally potent and selective as MAO-A inhibitor.
合成了新的单胺氧化酶抑制剂,作为先前报道的吡咯系列的吲哚类似物。几种化合物是有效的MAO-A(12、17、19-22、31、36和37)或MAO-B(14、20、24、38、44和46)抑制剂,具有K(i)值在纳摩尔浓度范围内。特别地,22(K(i)= 0.00092 microM,SI = 68,478)作为MAO-A抑制剂异常有效且具有选择性。在分子建模研究中,化合物22、24、44和46将吲哚环置于MAO-A的芳香腔中,并与Tyr407,Tyr444和FAD辅因子建立了pi-pi堆积相互作用。但是,只有化合物22能够与FAD形成氢键,这一发现与其有效的抗MAO-A活性相符。相反,在MD模拟过程中22 / MAOB复合物高度不稳定。