(S)-3-[(4E,10E,12E)-(1R,2R,7S,14R,15S,16R)-2,15-Bis-(tert-butyl-dimethyl-silanyloxy)-10,12,14-trimethyl-9-oxo-8,17-dioxa-bicyclo[14.1.0]heptadeca-4,10,12-trien-7-yl]-butyraldehyde   、                                                                                      
5-(2-((4S,5R,6S)-6-((2R,3S)-3-methoxybutan-2-yl)-2,2,5-trimethyl-1,3-dioxan-4-yl)ethylsulfonyl)-1-phenyl-1H-tetrazole                                                                                                                                                              在
                                                                                                                                                                                 
双(三甲基硅烷基)氨基钾                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                    反应 0.83h,
                                                                                                                以5.4g的产率得到(1R,2R,4E,7S,10E,12E,14R,15S,16R)-2,15-bis(tert-butyldimethylsilyloxy)-7-((S,E)-6-((4S,5R,6S)-6-((2R,3S)-3-methoxybutan-2-yl)-2,2,5-trimethyl-1,3-dioxan-4-yl)hex-4-en-2-yl)-10,12,14-trimethyl-8,17-dioxabicyclo[14.1.0]heptadeca-4,10,12-trien-9-one