Identification of the stereochemical requirements in the 4-aryl-2-cycloalkylidenhydrazinylthiazole scaffold for the design of selective human monoamine oxidase B inhibitors
作者:Melissa D’Ascenzio、Simone Carradori、Daniela Secci、Luisa Mannina、Anatoly P. Sobolev、Celeste De Monte、Roberto Cirilli、Matilde Yáñez、Stefano Alcaro、Francesco Ortuso
DOI:10.1016/j.bmc.2014.03.042
日期:2014.5
Exploring the effect that substituents on the cycloaliphatic ring had on the inhibitory activity against human monoamine oxidase B of a series of 4-aryl-2-cycloalkylidenhydrazinylthiazoles led to the synthesis of a new series of 2-methylcyclopentyl and 3-methylcyclopentyl derivatives which were tested in vitro as mixtures of diastereoisomers. In fact, due to the presence of a chiral center on the cycloaliphatic
探索脂环族环上的取代基对一系列4-芳基-2-环烷基亚烷基肼基噻唑对人单胺氧化酶B的抑制活性的影响,导致合成了一系列新的2-甲基环戊基和3-甲基环戊基衍生物,并进行了测试在体外作为非对映异构体的混合物。实际上,由于在脂环族环上存在手性中心和三取代的C N键,它们以四种非对映异构体((E)-(R),(E)-(S),(Z)-(R),(Z)-(S))。选择4-(2,4-二氟苯基)-2-(2-(3-甲基环亚戊基)肼基)噻唑作为模型,研究立体化学要求对立体保守合成后这些衍生物对hMAO-B抑制活性的影响和半制备HPLC非对映体分离。该化合物的(R)-(Z)异构体具有比参比药物更高的有效和选择性hMAO-B抑制作用,这也得到了分子模型研究的证实。