The invention relates to the 5S,4R-enantiomer of 2-(5-methyl-2-oxo-4-phenyl-pyrrolidin-1-yl)-acetamide with cognition enhancing activity of high pharmacological value and to its preparation method which includes the synthesis of 5S-methyl-4R-phenylpyrrolidin-2-one, its N-alkylation with ethyl haloacetate and the treatment of intermediate ethyl 2-(5S-methyl-2-oxo-4R-phenyl-pyrrolidin-1-yl)-acetate with ammonia.
本发明涉及一种具有高药理学价值的认知增强活性的2-(5-甲基-2-氧代-4-苯基-
吡咯烷-1-基)-乙酰胺的5S,4R-对映体及其制备方法,其包括5S-甲基-4R-苯基
吡咯烷-2-酮的合成,其与乙
酰卤代酸酯的N-烷基化以及中间体乙酰基2-(5S-甲基-2-氧代-4R-苯基-
吡咯烷-1-基)-
乙酸酯的
氨处理。