N-acyl acidic amino acid diamide derivative, a salt thereof, a process for producing the same and an anti-ulcer agent containing the same

Abstract From the Canadian patent

This invention relates to a novel N-acyl acidic amino acid diamide derivative represented by the general formula or a salt thereof:, whexein each of R1 R2, R3 and R4, which may be the same, or different represents a hydrogen atom or a substituted or unsubstituted alkyl, cycloalkyl, alkenyl or aralkyl group or R1 and R2 and/or R3 and R4, when taken together with the respective adjacent nitrogen atoms, form a substituted or unsubstituted heterocyclic group; R5 represents a substituted or unsubstituted cycloalkyl, acyl or heterocyclic group; A represents a bond or a substituted or unsubstituted alkylene alkenylene or alkadienylene group, and n is 1 2 or 3. Said, compound has an anti-ulcer …