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