甲醇   、                                                                                      
[(1R,2R,3S)-1-azido-4-hydroxy-2,3-(isopropylidenedioxy)butylhydroxyphosphinoyl]-2',3'-O-isopropylideneuridine triethylammonium salt                                                                                                                                                              在
                                                                                                                                                                                 5% palladium on barium sulphate   、                                                                                                  
氢气                                                                                                                                  作用下,
                                                                                                                                                                                        反应 3.5h,
                                                                                                                以72%的产率得到[(1R,2R,3S)-1-amino-4-hydroxy-2,3-(isopropylidenedioxy)butylhydroxyphosphinoyl]-2',3'-O-isopropylideneuridine