乙酸酐   、                                                                                      
((1R,4R,5S,6S)-4,5,6-Trihydroxy-3-hydroxymethyl-cyclohex-2-enyl)-carbamic acid (2R,3S,4R,5R,6R)-4,5-dihydroxy-6-methoxy-2-methyl-tetrahydro-pyran-3-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
吡啶                                                                                                                                  作用下,
                                                                                                                                                                                                                            以70%的产率得到Acetic acid (1S,2R,5R,6S)-2,6-diacetoxy-3-acetoxymethyl-5-((2R,3R,4S,5R,6R)-4,5-diacetoxy-6-methoxy-2-methyl-tetrahydro-pyran-3-yloxycarbonylamino)-cyclohex-3-enyl ester