2,5-二碘噻吩 、
[(2R,3R,4S,5S,6R)-6-bromo-3,4,5-tris(2,2-dimethylpropanoyloxy)tetrahydropyran-2-yl]methyl 2,2-dimethylpropanoate 在
tri-n-butyllithium magnesate complex 、 Br
3LiZn 作用下,
以
正己烷 、
正庚烷 、
二丁醚 、
甲苯 为溶剂,
反应 8.5h,
以33.1%的产率得到[(2R,3R,4S,5S,6S)-3,4,5-tris(2,2-dimethylpropanoyloxy)-6-[5-[(2S,3S,4S,5R,6R)-3,4,5-tris(2,2-dimethylpropanoyloxy)-6-(2,2-dimethylpropanoyloxymethyl)tetrahydropyran-2-yl]-2-thienyl]tetrahydropyran-2-yl]methyl 2,2-dimethylpropanoate