(1R)-1-methyl-2-phenylcarbonyloxyethyl (2S)-2-[(tert-butoxy)carbonylamino]-3-[3,4-bis(2,2-dimethylpropanoyloxy)phenyl]propanoate 、
盐酸 在
1,4-二氧六环 、
水 、
甲基叔丁基醚 、
乙腈 作用下,
以
1,4-二氧六环 为溶剂,
反应 1.0h,
以Lyophilization gave the title compound (12) (0.851 g, 98% yield) as a white solid的产率得到(1R)-1-Methyl-2-phenylcarbonyloxyethyl (2S)-2-[(tert-Butoxy)carbonylamino]-3-[3,4-bis(2,2-dimethylpropanoyloxy)phenyl]propanoate Hydrochloride