作者:Zhao Jia、Shen Wei、Qing Zhu
DOI:10.1248/bpb.33.725
日期:——
A new series of benzylidene-prop-2-ynyl-amines analogues have been synthesized and evaluated for their monoamine oxidase A and B inhibitory activity by determination of IC50 and selectivity index (SI). Among these inhibitors, benzhydrylidene-prop-2-ynyl-amine (2, IC50=32 nM) and (3, 4-dimethoxy-benzylidene)-prop-2-ynyl-amine (10, IC50=14 nM) provide the highest inhibitory potency toward monoamine oxidase (MAO) A and B respectively. (3,5-Dimethyl-1H-pyrrol-2-ylmethylene)-prop-2-ynyl-amine (1, SI=58.96) and compound (2, SI=0.34) were proved to be the superior selective inhibitors toward MAO-A and MAO-B respectively. Docking studies show that the imine moiety is located in hydrophobic pocket, bringing the propargyl group close to FAD which indicates that the different inhibitory potency toward MAO-A may be ascribable to both the distance between alkynyl group and N5 of FAD, and hydrogen bonding interactions between inhibitors and enzymes.
一种新的苄叉丙-2-炔基胺类化合物已被合成,并通过测定IC50值和选择性指数(SI)评估其单胺氧化酶A和B的抑制活性。在这些抑制剂中,苯甲基叉丙-2-炔基胺(2,IC50=32 nM)和(3, 4-二甲氧基苄叉)-丙-2-炔基胺(10,IC50=14 nM)分别向单胺氧化酶(MAO)A和B提供了最高的抑制效力。(3,5-二甲基-1H-吡咯-2-基亚甲基)-丙-2-炔基胺(1,SI=58.96)和化合物(2,SI=0.34)被证明分别是对MAO-A和MAO-B的优越选择性抑制剂。对接研究表明,亚胺基团位于疏水口袋中,使得炔基团靠近FAD,这表明对MAO-A的不同抑制效力可能与炔基团与FAD的N5之间的距离及抑制剂与酶之间的氢键相互作用有关。