The L-proline derivatives of the invention correspond to the Formula I: ##STR1## in which R.sub.1 corresponds to the Formula II: ##STR2## in which R is a carbonyl group, an acyl group --Y--CO-- or an oxy-acyl group --O--Y--CO--, Y being an alkyl or an alkenyl chain, Z being one or more hydrogen atoms, or one or more substituents chosen from among halogen atoms, CF.sub.3, alkyl or alkoxy groups and an alkylenedioxy group in the case of two neighbouring substituents, R.sub.2 is --NH.sub.2, --OH, or a derivative of these groups, A.sub.1 and A.sub.2 are amino acid residues and B.sub.1 and B.sub.2 represents a hydrogen atom or a methyl group, and the pharmacologically acceptable salts of these derivatives. These derivatives are useful particularly as the active principles of medicines possessing, in particular, a nootropic action.
该发明的
L-脯氨酸衍
生物对应于以下公式I:##STR1##其中R.sub.1对应于以下公式II:##STR2##其中R是一个羰基,一个酰基--Y--CO--或一个氧酰基--O--Y--CO--,Y是一个烷基或烯基链,Z是一个或多个氢原子,或者从卤素原子、CF.sub.3、烷基或烷氧基团以及两个相邻取代基的情况下的烷二氧基团中选择的一个或多个取代基,R.sub.2是--NH.sub.2,--OH,或这些基团的衍
生物,A.sub.1和A.sub.2是
氨基酸残基,B.sub.1和B.sub.2代表氢原子或甲基基团,以及这些衍
生物的药理学可接受的盐。这些衍
生物特别用作具有智力增强作用的药物的活性成分。