New cinnamoic compounds, the process for preparing same and the use thereof in therapeutics

摘要

Compounds of formula: <IMAGE> (I) wherein: Ar is an aromatic group; R and R1 are H or CH3; A represents a nitrogenized heterocyclic radical; B is OH or forms with the adjacent CO group, either an amido group, or a carbonyloxy group; R2 and R3 are H or alkyl; m=0 or 1; and n=0, 1, 2 or 3. These compounds are useful as drugs having stimulating, protecting and/or correcting activities of the cerebral functions.