5'-O-[dimethyl(1,1,2-trimethylpropyl)silyl]-2',3'-O-isopropylideneuridine-6-methyl-(6(1)->5'-N)-5'-amino-N6-benzoyl-5'-deoxy-2',3'-O-isopropylideneadenosine                                                                                                                                                              在
                                                                                                                                                                                 
sodium methylate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 48.0h,
                                                                                                                以87%的产率得到5'-O-[dimethyl(1,1,2-trimethylpropyl)silyl]-2',3'-O-isopropylideneuridine-6-methyl-(6(1)->5'-N)-5'-amino-5'-deoxy-2',3'-O-isopropylideneadenosine