4,5-Dihydroxyimidazolidin-2-ones in α-ureidoalkylation of N-carboxyalkyl-, N-hydroxyalkyl-, and N-(aminoalkyl)ureas 4.* α-Ureidoalkylation of N-(2-acetylaminoethyl)ureas
作者:G. A. Gazieva、P. V. Lozhkin、V. V. Baranov、A. N. Kravchenko、N. N. Makhova
DOI:10.1007/s11172-010-0117-0
日期:2010.3
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。