Solid-Phase Synthesis and Insights into Structure−Activity Relationships of Safinamide Analogues as Potent and Selective Inhibitors of Type B Monoamine Oxidase
作者:Francesco Leonetti、Carmelida Capaldi、Leonardo Pisani、Orazio Nicolotti、Giovanni Muncipinto、Angela Stefanachi、Saverio Cellamare、Carla Caccia、Angelo Carotti
DOI:10.1021/jm070725e
日期:2007.10.1
solid-phase synthesis and evaluated for their monoamine oxidase B (MAO-B) and monoamine oxidase A (MAO-A) inhibitory activity and selectivity. (S)-3-Chlorobenzyloxyalaninamide (8) and (S)-3-chlorobenzyloxyserinamide (13) derivatives proved to be more potent MAO-B inhibitors than safinamide (IC50 = 33 and 43 nM, respectively, vs 98 nM) but with a lower MAO-B selectivity (SI = 3455 and 1967, respectively, vs
沙芬酰胺,(S)-N2- 4-[(3-氟苄基氧基)苄基}丙氨酰胺甲磺酸盐,正在作为帕金森抗帕金森氏症药物进行III期临床试验,并通过快速固体制备了烷酰胺类似物文库相合成并评估其单胺氧化酶B(MAO-B)和单胺氧化酶A(MAO-A)的抑制活性和选择性。(S)-3-氯苄氧基丙氨酰胺(8)和(S)-3-氯苄氧基丝氨酰胺(13)衍生物被证明是比Safinamide更有效的MAO-B抑制剂(IC50分别为33和43 nM,而98 nM),但具有较低的MAO-B选择性(SI分别为3455和1967,而5918)。沙芬酰胺的四氢异喹啉类似物(R)-21显示出最高的MAO-B抑制力(IC50 = 17 nM)和良好的选择性(SI = 2941)。结构亲和关系和对接模拟指出了α-氨基酰胺侧链和苄氧基的对位取代基的强烈负空间效应,以及间位取代基的有利疏水相互作用。许多R和Sα-氨基酰胺对映异构体(包括沙芬酰