Acetic acid (2R,3S,4R,5S,6R)-2-acetoxymethyl-5-acetylamino-6-((1R,2S,3R,4R,5R)-3,4-dihydroxy-6,8-dioxa-bicyclo[3.2.1]oct-2-yloxy)-4-hydroxy-tetrahydro-pyran-3-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
吡啶   、                                                                                                  
sodium methylate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 5.0h,
                                                                                                                生成                                                 
1,6-anhydro-4-O-(2-acetamido-2-deoxy-α-D-mannopyranosyl)-β-D-glucopyranose