N'-((S)-2-Amino-propionyl)-hydrazinecarboxylic acid benzyl ester; hydrochloride 、
γ-tert.-Butyl-α-(2,4,5-trichlor-phenyl)-N-benzyloxycarbonyl-glutamat 以
N,N-二甲基甲酰胺 为溶剂,
生成 (S)-4-Benzyloxycarbonylamino-4-[(S)-2-(N'-benzyloxycarbonyl-hydrazino)-1-methyl-2-oxo-ethylcarbamoyl]-butyric acid tert-butyl ester