(1S,3'R,4'S,5'R,6'R)-3',4',5'-tris-benzyloxy-6'-benzyloxymethyl-6-ethynyl-5-methylthio-3',4',5',6'-tetrahydro-spiro[isobenzofuro-1(3H),2'-[2H]pyran]                                                                                                                                                              在
                                                                                                                                                                                 
碘                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 0.25h,
                                                                                                                以22%的产率得到(3'R,4'S,5S,5'R,6'R)-3',4',5'-tris-benzyloxy-6'-benzyloxymethyl-3-iodo-3',4',5',6'-tetrahydro-spiro[thieno[2,3-f]isobenzofuran-5(7H),2'-[2H]pyran]