乙酸酐   、                                                                                      
(4R,5R,6S)-4-[(2R,3R,4S,5R,6S)-5-Azido-6-(tert-butyl-dimethyl-silanyloxy)-3,4-bis-methoxymethoxy-tetrahydro-pyran-2-yl]-6-(tert-butyl-diphenyl-silanyloxymethyl)-2,2-dimethyl-[1,3]dioxan-5-ol                                                                                                                                                              在
                                                                                                                                                                                 
吡啶   、                                                                                                  
4-二甲氨基吡啶                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成                                                 Acetic acid (4S,5R,6S)-4-[(2R,3R,4S,5R,6S)-5-azido-6-(tert-butyl-dimethyl-silanyloxy)-3,4-bis-methoxymethoxy-tetrahydro-pyran-2-yl]-6-(tert-butyl-diphenyl-silanyloxymethyl)-2,2-dimethyl-[1,3]dioxan-5-yl ester