(+/-)-5-endo-Acetoxymethyl-2-exo-methylsulfonyloxy-3-exo-p-toluenesulfonamido-7-oxabicyclo<2.2.1>heptane                                                                                                                                                              在
                                                                                                                                                                                 
sodium methylate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 48.0h,
                                                                                                                以75%的产率得到(+/-)-5-endo-Hydroxymethyl-2-exo-methylsulfonyloxy-3-exo-p-toluenesulfonamido-7-oxabicyclo<2.2.1>heptane