乙酸酐   、                                                                                      
3-(Hydroxy-phenyl-methyl)-6-((2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy)-5,6-dihydro-4H-benzofuran-2-one                                                                                                                                                              在
                                                                                                                                                                                 
吡啶                                                                                                                                  作用下,
                                                                                                                                                                                        反应 3.0h,
                                                                                                                以100%的产率得到Acetic acid [2-oxo-6-((2R,3R,4S,5R,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yloxy)-2,4,5,6-tetrahydro-benzofuran-3-yl]-phenyl-methyl ester