(2S)-2-({(2S)-2-[(tert-butoxycarbonyl)amino]-3-phenylpropanoyl}amino)-3-[3-(methoxycarbonyl)-4-(2-methoxy-2-oxoethoxy)phenyl]propanoic acid 、
3-phenyl-3-hydroxypropionic acid hydrazide 以to give the title compound (58 mg) as a diasteromeric mixture的产率得到5-{(2S)-2-({(2S)-2-[(tert-Butoxycarbonyl)amino]-3-phenylpropanoyl}amino)-3-[2-(3-hydroxy-3-phenylpropanoyl)hydrazino]-3-oxopropyl}-2-(carboxymethoxy)benzoic Acid