(2R,3S,4R,5S)-N-(tert-butoxycarbonyl)-2-[(1,1'-biphenyl-4-carbamoyl)methyl]-3,4-O-isopropylidene-5-methylpyrrolidine-3,4-diol 在
dimethyl sulfide borane 作用下,
以
四氢呋喃 为溶剂,
以89%的产率得到(2R,3S,4R,5S)-N-(tert-butoxycarbonyl)-2-[2-(1,1'-biphenyl-4-ylamino)ethyl]-3,4-O-isopropylidene-5-methylpyrrolidine-3,4-diol