(2,5-dimethoxystyryl)trimethylstannane   、                                                                                      
(4S,7S)-4-(tert-butyl-diphenyl-silanyloxy)-7-methyl-7-vinyl-4,5,6,7-tetrahydro-isobenzofuran-1-carbaldehyde                                                                                                                                                              在
                                                                                                                                                                                 
正丁基锂                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                    反应 0.08h,
                                                                                                                以92%的产率得到(E)-1-[(4S,7S)-4-(tert-butyl-diphenyl-silanyloxy)-7-methyl-7-vinyl-4,5,6,7-tetrahydro-isobenzofuran-1-yl]-3-(2,5-dimethoxy-phenyl)-prop-2-en-1-ol