COMPOUNDS HAVING A COGNITION ADJUVANT ACTON AGENTS CONTAINING THEM,AND THE USE THERE OF THE TREATMENT AND PROPHYLAXIS OF COGNITIVES DYSFUNCTIONS

摘要

The compounds (I) having a cognition adjuvant action and agants containing them are prepared. In (I), n is 1 or 2; R is hydrogen, C1- C18 alkyl, CaH(2a-b+1) aliphatic acyclic radical, or CcH(2c-d-1) mono-, di-, tri-, and tetra-, etc.; R1 is hydrogen, C1-C18 alkyl, CaH(2a-b+1) acyclic aliphatic radical or CcH(2c-d-1) mono-, di-, t6ri- and tetraa-, etc.; R2 and R3 are equal, hydrogen, di(C1-C4)- alkylamino-(C1-C5)-aroyloxy-(C1-C8) alkyl or (C1-C6)- alkoxycarbonyloxy-(C1-C6)-alkyl etc.; R4 and R5 are cyclic ring systems having mono-, di- or tricyclic hetero cyclic ring.