(1S,3'R,4'S,5'R,6'R)-3',4',5'-tris benzyloxy-6'-benzyloxymethyl-5-methylthio-3',4',5',6'-tetrahydro-6-(2-trimethylsilylethynyl)-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98%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-2-trimethylsilyl-spiro[thieno[2,3-f]isobenzofuran-5(7H),2'-[2H]pyran]