(3'R,4'S,5S,5'R,6'R)-3',4',5'-tris-benzyloxy-6'-benzyloxymethyl-3-(4-ethylphenyl)-3',4',5',6'-tetrahydro-2-trimethylsilyl-spiro[thieno[2,3-f]isobenzofuran-5(7H),2'-[2H]pyran] 在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
反应 1.5h,
以98%的产率得到(3'R,4'S,5S,5'R,6'R)-3',4',5'-tris-benzyloxy-6'-benzyloxymethyl-3-(4-ethylphenyl)-3',4',5',6'-tetrahydro-spiro[thieno[2,3-f]isobenzofuran-5(7H),2'-[2H]pyran]