A process for the production of a derivative of Diami-N-acylamino das

摘要

This invention relates to a novel N-acyl acidic amino acid diamide derivative represented by the general formula or a salt thereof: IMAGE wherein 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 activity which is effective to human beings and animals. This disclosure relates to such a compound, to a process for the production thereof and to an anti-ulcer agent containing the same.