[2-hydroxy-6-methoxy-3-[(E)-2-(3,4,5-trimethoxyphenyl)ethenyl]phenyl] 4-methylbenzenesulfonate   、                                                                                      
乙酰溴-Alpha-D-葡萄糖酮酸甲基酯                                                                                                                                                              在
                                                                                                                                                                                 
caesium carbonate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
丙酮                                                                                  为溶剂,
                                                                                                                                                    反应 24.17h,
                                                                                                                以56%的产率得到(E)-3(S),4(S),5(R)-triacetoxy-6(S)-[(3,4,5-trimethoxy)-(4'-methoxy-3'-(p-toluenesulfonyloxy)-2'-stilbenyloxy)]tetrahydropyran-2(S)-carboxylic acid methyl ester