[4-[[[(2R,3S)-3-(dibenzylamino)-2-hydroxy-4-phenylbutyl](2-methylpropyl)amino]sulfonyl]-2-nitrophenyl]carbamic acid 1,1-dimethylethyl ester 在
palladium 10% on activated carbon
噻吩 、
氢气 作用下,
以
甲醇 为溶剂,
以75%的产率得到[2-amino-4-[[[(2R,3S)-3-(dibenzylamino)-2-hydroxy-4-phenylbutyl](2-methylpropyl)amino]sulfonyl]phenyl]carbamic acid 1,1-dimethylethyl ester