(S)-1-{(2S,3S)-3-Benzyloxy-2-[(S)-4-benzyloxycarbonyl-4-((S)-2-tert-butoxycarbonylamino-3-methyl-butyrylamino)-butyrylamino]-butyryl}-pyrrolidine-2-carboxylic acid 2,5-dioxo-pyrrolidin-1-yl ester 在
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
生成 (S)-1-{(2S,3S)-2-[(S)-4-((S)-2-Amino-3-methyl-butyrylamino)-4-benzyloxycarbonyl-butyrylamino]-3-benzyloxy-butyryl}-pyrrolidine-2-carboxylic acid 2,5-dioxo-pyrrolidin-1-yl ester; compound with trifluoro-acetic acid