A novel class of substances of N-acylprolyldipeptides, which possess psychotropic activity and particularly facilitate learning and memory are described. The N-acylprolyldipeptides of the invention have formula (1), wherein R<1> = (C4-C5) alkyl, cycloalkyl, aralkyl, or aryl; R<2> = H1 (C1-C4) alkyl, carbamidoalkyl, or carbalkoxyalkyl; R<3> = NH2, NH(alkyl), N(alkyl)2, OH, or alkoxy; and n = 0-3, preferably 0-2.
BIOLOGICALLY ACTIVE N-ACYLPROLYLDIPEPTIDES HAVING ANTIAMNESTIC, ANTIHYPOXIC AND ANOREXIGENIC EFFECTS