PROCESS FOR PREPARATION OF PEPTIDE DERIVATIVES

摘要

An industrially advantageous process is provided by which peptide derivatives of the general formula (I) can be easily prepared in high yield. The peptide derivatives of the general formula (I) exhibit motilin receptor antagonism and are useful as drugs for gastric or intestinal diseases. (I) [In the formula, R1 is hydrogen or linear or branched C1-4 alkyl; R2 is hydrogen or linear or branched C1-4 alkyl; and R3 is halogeno.]