(2S)-2-[biphenyl-4-ylmethyl-(2S)-(2-tert-butoxycarbonylamino-3-(2-naphthyl)propionyl)amino]-3-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid methyl ester 、
三氟乙酸 在
二氯甲烷 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以Stripped 2 times from dichloromethane to afford 1.26 g (theoretically 1.49 mmol) of (2S)-2-[((2S)-2-amino-3-(2-naphthyl)propionyl)biphenyl-4-ylmethylamino]-3-(9H-fluoren-9-ylmethoxy carbonylamino)propionic acid methyl ester trifluoroacetic acetate as yellow foam的产率得到(2S)-2-[((2S)-2-amino-3-(2-naphthyl)propionyl)biphenyl-4-ylmethylamino]-3-(9H-fluoren-9-ylmethoxy carbonylamino)propionic acid methyl ester