Alkyl-substituted thiolo-, thiono-, and dithio-.gamma.-butyrolactones: new classes of convulsant and anticonvulsant agents
作者:Jeffrey A. Levine、James A. Ferrendelli、Douglas F. Covey
DOI:10.1021/jm00160a032
日期:1986.10
neuropharmacologic agents. The lactones were treated with benzyl mercaptide anion to form 4-(benzylthio)butyric acid, which, on treatment with trifluoroacetic acid, cyclized to yield thiololactones. The thiono- and dithiolactones were prepared by treating the corresponding lactones either with Lawesson's reagent or with phosphorus pentasulfide, respectively. As had been observed previously for the lactones
由α-乙基-α-甲基-γ-丁内酯,β-乙基-β-甲基-γ-丁内酯和α,α,β,β-β-四甲基-γ-丁内酯制备了一系列含硫同类物。潜在的神经药物。用苄基硫醇盐阴离子处理内酯以形成4-(苄基硫基)丁酸,其在用三氟乙酸处理后环化以产生硫代内酯。硫代内酯和二硫代内酯分别通过用Lawesson试剂或五硫化二磷处理相应的内酯来制备。正如以前对内酯所观察到的那样,β-取代的和α,β-取代的同类物是强效惊厥剂,可引起小鼠全身性阵挛性和强直性癫痫发作。α-取代的同类物可有效抑制戊四氮诱导的小鼠癫痫发作。与同类α-乙基-α-甲基-γ-丁内酯相比,α-乙基-α-甲基硫代-γ-丁内酯显示出更高的功效,此外,它还可以最大程度地防止电击发作。在任何情况下,惊厥剂都不会通过硫换氧而转变为抗惊厥剂,反之亦然。