(2S,3R,4R,5S,6R)-2,5-O-bis-(tert-butyldimethylsilyl)-tetrahydro-3-methoxy-4,6-dimethyl-2H-pyran-2,4,5-triol                                                                                                                                                              在
                                                                                                                                                                                 
四丁基氟化铵   、                                                                                                  
溶剂黄146                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                    反应 1.5h,
                                                                                                                生成                                                 
(2R,3R,4R,5S,6S)-5-tert-butyldimethylsilanyloxy-tetrahydro-3-methoxy-4,6-dimethyl-2H-pyran-2,4-diol   、                                                                                             (2S,3R,4R,5S,6S)-5-tert-butyldimethylsilanyloxy-tetrahydro-3-methoxy-4,6-dimethyl-2H-pyran-2,4-diol