(5S,5aS,8aR,9R)-5-[4-[[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxymethyl]triazol-1-yl]-9-(3,4,5-trimethoxyphenyl)-5a,6,8a,9-tetrahydro-5H-[2]benzofuro[6,5-f][1,3]benzodioxol-8-one   、                                                                                      
乙酸酐                                                                                                                                                                                              以
                                                                                         
吡啶                                                                                  为溶剂,
                                                                                                                                                    反应 6.0h,
                                                                                                                以95%的产率得到[(2R,3R,4S,5R,6R)-6-[[1-[(5S,5aS,8aR,9R)-8-oxo-9-(3,4,5-trimethoxyphenyl)-5a,6,8a,9-tetrahydro-5H-[2]benzofuro[6,5-f][1,3]benzodioxol-5-yl]triazol-4-yl]methoxy]-3,4,5-triacetyloxyoxan-2-yl]methyl acetate