3,4-Diacetoxy-benzoic acid 3-[(4-hydroxy-2-oxo-2H-chromen-3-yl)-(4-hydroxy-phenyl)-methyl]-2-oxo-2H-chromen-4-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
盐酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                    反应 3.0h,
                                                                                                                以75%的产率得到[3-[(4-Hydroxy-2-oxo-chromen-3-yl)-(4-hydroxyphenyl)methyl]-2-oxo-chromen-4-yl] 3,4-dihydroxybenzoate