Acetic acid (2S,3R,4S,5R,6R)-3,5-diacetoxy-2-[(S)-1-(2-acetoxy-ethyl)-allyloxy]-6-acetoxymethyl-tetrahydro-pyran-4-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
sodium methylate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 0.5h,
                                                                                                                以97%的产率得到(2S,3R,4S,5S,6R)-2-[(S)-1-(2-Hydroxy-ethyl)-allyloxy]-6-hydroxymethyl-tetrahydro-pyran-3,4,5-triol