4-(Aminomethyl)-1-benzyl-2-oxopyrrolidine (VI) was transformed by treatment with (4-benzhydrylpiperazin-1-yl)carbonyl chlorides IIIb - IIId and with (4-methylpiperazin-1-yl)carbonyl chloride (IIIa) to the carboxamides IVa - IVd. Heating of 1-(ethoxycarbonylmethyl)-2,4-dioxopyrrolidine (XIX) in acetonitrile in the presence of water afforded XVIIIa. Treatment with ammonia led to the diamide XVIIIc, while alkaline hydrolysis of XVIIIa gave the dicarboxylic acid XVIIIb. 4-(Aminomethyl)-1-(4-methylthiobenzyl)-2-oxopyrrolidine (XII) was prepared by the reaction of 4-(methylthio)benzylamine with itaconic acid and the following sequence of reactions starting from the obtained carboxylic acid VII including esterification, reduction and treatment the obtained alcohol IX with thionyl chloride, synthesis of phthalimido derivative XI and hydrazinolysis. Amine XII added to 4-chlorophenyl isocyanate formed XIII. The compounds prepared were tested for nootropic activity.
4-(
氨甲基)-1-苄基-2-氧代
吡咯烷(VI)经过与(4-苄基
哌嗪-1-基)羰基
氯化物IIIb - IIId和(4-甲基
哌嗪-1-基)羰基
氯化物(IIIa)处理后转化为羧酰胺IVa - IVd。在
乙腈中加
水加热1-(乙氧羰基甲基)-2,4-二氧代
吡咯烷(XIX)得到XVIIIa。与
氨处理得到二酰胺XVIIIc,碱性
水解XVIIIa得到二
羧酸XVIIIb。4-(
氨甲基)-1-(4-甲
硫基苄基)-2-氧代
吡咯烷(XII)通过4-(甲
硫基)
苄胺与顺
丁二酸反应以及从得到的
羧酸VII开始的一系列反应制备,包括酯化、还原和用
氯化亚砜处理得到的醇IX,合成邻苯二甲
酰亚胺衍
生物XI和
水解。胺XII加入4-
氯苯基
异氰酸酯形成XIII。制备的化合物进行了智力活性测试。