α-Ureidoalkylation of N-(2-acetylammoethyl)ureas with various 4,5-dihydroxyimidazoli-din-2-ones was systematically studied. Novel N-(2-acetylaminoethyl)glycolurils were obtained. Their yields were found to decrease both when moving from l,3-H2-to l,3-Alk2-4,5-dihydroxy-imidazolidin-2-ones and when increasing the size of the substituent at the second N atom in the starting acetylaminoethylurea. The higher yields were achieved with 4,5-diphenyl-4,5-dihydroxyimidazolidin-2-one as the starting compound. 2-(2-Acetylaminoethyl)-4-methylgly-coluril exhibits nootropic activity.
系统研究了 N-(2-乙酰
氨基乙基)
脲与各种 4,5-二羟基
咪唑-2-酮的 α-
脲烷基化反应。获得了新的 N-(2-乙酰
氨基乙基)甘
氨酰
脲。研究发现,当从 l,3-H2转变为 l,3-Alk2-4,5-二羟基
咪唑啉-2-酮时,以及当增加起始乙酰
氨基乙基
脲中第二个 N 原子上取代基的大小时,它们的产率都会降低。以 4,5
-二苯基-4,5-二羟基
咪唑烷-2-酮为起始化合物的产率较高。2-(2-Acetylaminoethyl)-4-methylgly-coluril 具有促智活性。