对溴乙基苯   、                                                                                      
(1S,3'R,4'S,5'R,6'R)-6-acetyl-3',4',5'-tris-benzyloxy-6'-benzyloxymethyl-5-methylthio-3',4',5',6'-tetrahydro-spiro[isobenzofuro-1(3H),2'-[2H]pyran]                                                                                                                                                              在
                                                                                                                                         palladium diacetate   、                                                                                                  
4,5-双二苯基膦-9,9-二甲基氧杂蒽                                                                                                                                                                                                                               potassium phosphate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲苯                                                                                  为溶剂,
                                                                                                                                                    反应 2.0h,
                                                                                                                以32%的产率得到(1S,3'R,4'S,5'R,6'R)-6-[2-(4-ethylphenyl)-1-oxoethyl]-3',4',5'-tris-benzyloxy-6'-benzyloxymethyl-5-methylthio-3',4',5',6'-tetrahydrospiro[isobenzofuro-1(3H),2'-[2H]pyran]