对氰基苯甲酸 、 N-[N-(m-aminobenzoyl)-3-(t-butoxycarbonyl)-L-alanyl]-3-(1-naphthyl)-L-alanine methyl ester 以there is obtained N-[3-(t-butoxycarbonyl)-N-[m-(p-cyanobenzamido)benzoyl]-L-alanyl]-3-(1-naphthyl)-L-alanine methyl ester, yield: 56% of theory, MS的产率得到N-[3-(t-butoxycarbonyl)-N-[m-(p-cyanobenzamido)benzoyl]-L-alanyl]-3-(1-naphthyl)-L-alanine methyl ester