{(1R,3S)-3-[(2R,3S)-1-(tert-Butyl-dimethyl-silanyl)-3-((R)-1-hydroxy-ethyl)-4-oxo-azetidin-2-yl]-2-oxo-cyclohexyl}-methyl-carbamic acid benzyl ester                                                                                                                                                              在
                                                                                                                                                                                 sodium tetrahydroborate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醇   、                                                                                         
水                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                以75%的产率得到{(1R,2R,3S)-3-[(2R,3S)-1-(tert-Butyl-dimethyl-silanyl)-3-((R)-1-hydroxy-ethyl)-4-oxo-azetidin-2-yl]-2-hydroxy-cyclohexyl}-methyl-carbamic acid benzyl ester