(3'R,4'S,5S,5'R,6'R)-3',4',5'-tris-benzyloxy-6'-benzyloxymethyl-3-[(4-ethylphenyl)methyl]-3',4',5',6'-tetrahydro-2-trimethylsilylspiro[thieno[2,3-f]isobenzofuran-5(7H),2'-[2H]pyran] 在
磺酰氯 作用下,
以
乙腈 为溶剂,
反应 3.5h,
以43%的产率得到(3'R,4'S,5S,5'R,6'R)-3',4',5'-tris-benzyloxy-6'-benzyloxymethyl-2-chloro-3-[(4-ethylphenyl)methyl]-3',4',5',6'-tetrahydrospiro[thieno[2,3-f]isobenzofuran-5(7H),2'-[2H]pyran]