dimethyl (1S,2R,3S)-1-azido-4-[(p-bromobenzoyl)oxy]-2,3-(isopropylidenedioxy)butylphosphonate                                                                                                                                                              在
                                                                                                                                                                                 lithium bromide                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                    反应 2.0h,
                                                                                                                以83%的产率得到(1S,2R,3S)-1-azido-4-[(p-bromobenzoyl)oxy]-2,3-(isopropylidenedioxy)butylphosphonic acid mono-methyl ester