(2R,3S,5R)-5-[(1R,2S)-3-(3-benzyloxy-5-fluoro-phenyl)-1-hydroxy-2-nitro-propyl]-2-(2,2-dimethyl-propoxy)-3-methyl-morpholine-4-carboxylic acid tert-butyl ester 在
sodium tetrahydroborate 、 nickel dichloride 作用下,
以
甲醇 为溶剂,
反应 0.5h,
以77.3%的产率得到(2R,3S,5R)-5-[2-Amino-3-(3-benzyloxy-5-fluoro-phenyl)-1-hydroxy-propyl]-2-(2,2-dimethyl-propoxy)-3-methyl-morpholine-4-carboxylic acid tert-butyl ester