(2R,4S)-4-tert-Butoxycarbonylamino-2-carboxymethyl-pyrrolidine-1-carboxylic acid tert-butyl ester 在
N,N'-二环己基碳二亚胺 作用下,
以
乙酸乙酯 为溶剂,
生成 (2R,4S)-4-tert-Butoxycarbonylamino-2-{[(R)-3-phenyl-1-(quinolin-3-ylcarbamoyl)-propylcarbamoyl]-methyl}-pyrrolidine-1-carboxylic acid tert-butyl ester