2-amino-6-[N-methyl-N-(methanesulfonylhydrazidyl)-9-(3,5-O,O'-cyclic-phosphoryl-2-C-methyl-β-D-ribofuranosyl)]adenine triethylammonium salt   、                                                                                      
S-(2-hydroxyethyl)thioacetate                                                                                                                                                              在
                                                                                                                                                                                 phosphorus pentoxide   、                                                                                                  
苯甲基-2-磺酰三硝基三氮唑                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
吡啶                                                                                  为溶剂,
                                                                                                                                                    反应 72.0h,
                                                                                                                以15%的产率得到S-(2-(((4aR,6R,7R,7aR)-6-(2-amino-6-(1-methyl-2-(methylsulfonyl)hydrazineyl)-9H-purin-9-yl)-7-hydroxy-7-methyl-2-oxidotetrahydro-4H-furo[3,2-d][1,3,2]dioxaphosphinin-2-yl)oxy)ethyl) ethanethioate