Acetic acid (2R,3S,4R,5R,6S)-4,5-diacetoxy-2-((2S,3R,4S,5S,6R)-4-allyloxy-5-hydroxy-6-hydroxymethyl-2-methoxy-tetrahydro-pyran-3-yloxy)-6-methyl-tetrahydro-pyran-3-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
sodium methylate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 2.0h,
                                                                                                                以96%的产率得到(2R,3S,4R,5S,6S)-2-((2S,3R,4S,5S,6R)-4-Allyloxy-5-hydroxy-6-hydroxymethyl-2-methoxy-tetrahydro-pyran-3-yloxy)-6-methyl-tetrahydro-pyran-3,4,5-triol