(S)-3-[4-(2,6-dichlorobenzyloxy)phenyl]-2-{[(4R,5R)-5-(4-methylpiperazine-1-carbonyl)-[1,3]dioxolane-4-carbonyl]amino}propionic acid tert-butyl ester 、
三氟乙酸 以
二氯甲烷 为溶剂,
反应 3.0h,
以97%的产率得到(S)-3-[4-(2,6-dichlorobenzyloxy)phenyl]-2-{[(4R,5R)-5-(4-methylpiperazine-1-carbonyl)-[1,3]dioxolane-4-carbonyl]amino}propionic acid trifluoroacetic acid salt