(1R,4aR,8aR)-6-[1,3]Dioxan-2-yl-1,4a-dimethyl-5-((E)-4-methyl-3-trimethylsilanyloxy-pent-2-enyl)-1,2,3,4,4a,5,8,8a-octahydro-naphthalene-1-carboxylic acid methyl ester                                                                                                                                                              在
                                                                                                                                                                                 
二甲基硫   、                                                                                                  
臭氧                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成                                                 
(1R,4aR,8aR)-6-[1,3]Dioxan-2-yl-1,4a-dimethyl-5-(2-oxo-ethyl)-1,2,3,4,4a,5,8,8a-octahydro-naphthalene-1-carboxylic acid methyl ester