司他夫定   、                                                                                      
1-(3-azido-2,3-dideoxy-β-erythro-pentafuranosyl)-3-[4-(bromomethyl)benzyl]-5-methylpyrimidine-2,4(1H,3H)-dione                                                                                                                                                              在
                                                                                                                                                                                 
potassium carbonate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                    反应 26.0h,
                                                                                                                以77%的产率得到1-((2R,4S,5S)-4-azido-5-(hydroxymethyl)tetrahydrofuran-2-yl)-3-(4-((3-((2R,5S)-5-(hydroxymethyl)-2,5-dihydrofuran-2-yl)-5-methyl-2,6-dioxo-3,6-dihydropyrimidin-1(2H)-yl)methyl)benzyl)-5-methylpyrimidine-2,4(1H,3H)-dione