(S,S)-[3-Methoxycarbonylmethyl-4-[3-(4-methoxyphenyl)-2-(4-pyridin-4-ylbenzoylamino)propionyl]-2-oxo-piperazin-1-yl]acetic Acid tert-butyl ester 在
三氟乙酸 作用下,
以
甲苯 为溶剂,
生成
(S,S)-[3-Methoxycarbonylmethyl-4-[3-(4-methoxyphenyl)-2-(4-pyridin-4-ylbenzoylamino)propionyl]-2-oxo-piperazin-1-yl]acetic Acid Trifluoroacetic Acid Salt