{(1S,2R)-1-Benzyl-3-[((2R,3S)-3-tert-butoxycarbonylamino-2-hydroxy-4-phenyl-butyl)-(9H-fluoren-9-ylmethoxycarbonyl)-amino]-2-hydroxy-propyl}-methyl-carbamic acid tert-butyl ester 在
哌啶 作用下,
以
二氯甲烷 为溶剂,
反应 1.5h,
以72%的产率得到<(S,R)-3-<<(R,S)-3-<<(1,1-dimethylethoxy)carbonyl>amino>-2-hydroxy-4-phenylbutyl>amino>-2-hydroxy-1-(phenylmethyl)propyl>methylcarbamic acid 1,1-dimethylethyl ester