乙酸酐   、                                                                                      
(5S,6S,7R,8S)-2-(2-phenylethyl)-6,7,8-trihydroxy-5,6,7,8-tetrahydro-5-<2-(2-phenylethyl)chromonyl-6-oxy>chromone                                                                                                                                                              在
                                                                                                                                                                                 
吡啶                                                                                                                                  作用下,
                                                                                                                                                                                        反应 2.0h,
                                                                                                                以22 mg的产率得到Acetic acid (5S,6R,7R,8S)-7,8-diacetoxy-4-oxo-5-(4-oxo-2-phenethyl-4H-chromen-6-yloxy)-2-phenethyl-5,6,7,8-tetrahydro-4H-chromen-6-yl ester