(2S,5R,6R,8R,10R)-10-[(1S,2R,3R,5R,7S)-2-(tert-butyldimethylsilyl)oxy-7-[(1R,2S)-1-[(2S,3R)-4-(tert-butyldimethylsilyl)oxy-2,3-dimethylbutyl]-4-(tert-butyldiphenylsilyl)oxymethyl-1-(1-trimethylsilyloxybut-3-enyl)cyclohex-3-en-2-yl]-3-methyl-6,8-dioxabicyclo[3.2.1]oct-5-ylmethyl]-5-methyl-2-(2-propynyl)-5-(triethylsilyl)oxy-1,7,9-trioxadispiro[5.1.5.2]pentadecane                                                                                                                                                              在
                                                                                                                                                                                 [CpRu(MeCN)3]PF
6                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
丙酮                                                                                  为溶剂,
                                                                                                                                                    反应 0.25h,
                                                                                                                以79%的产率得到(1R,3E,8S,11R,12R,15R,19R,21R,23R,24R,25S,26S,27S)-24-(tert-butyldimethylsilyl)oxy-1-[(2S,3R)-4-(tert-butyldimethylsilyl)oxy-2,3-dimethylbutyl]-29-(tert-butyldiphenylsilyl)oxymethyl-8,12:12,15:15,19:21,25:21,26-pentaepoxy-11,23-dimethyl-6-methylene-11-(triethylsilyl)oxy-2-(trimethylsilyl)oxybicyclo[25.4.0]hentriaconta-3,28-diene