(3a'S,5'R,5a'S,8'R,9'S,10a'S)-2',2',5'-trimethyl-9'-(2-methylallyl)-4-methylenedecahydrospiro[cyclohexane-1,10'-[5a,8]methanocyclopenta[c]azulene]                                                                                                                                                              在
                                                                                                                                                                                 
吡啶   、                                                                                                  
二苯基二硒醚   、                                                                                                  
meta-iodoxybenzoic acid                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲苯                                                                                  为溶剂,
                                                                                                                                                    反应 10.0h,
                                                                                                                以85%的产率得到(3a'S,5'R,5a'S,8'R,9'S,10a'S)-2',2',5'-trimethyl-9'-(2-methylallyl)-4-methylene-1',2',3',3a',4',5',6',7',8',9'-decahydrospiro[cyclohexane-1,10'-[5a,8]methanocyclopenta[c]azulene]-2,5-diene