(1'R,2'R)-1'-[(1E,3E)-2,4-dimethylhexa-1,3,5-trienyl]-2'-[(1R,2E)-1-hydroxy-3-methoxycarbonylprop-2-enyl]-1'-methylspiro[1,3-dithiane-2,4'-cyclohexane] 在
2,6-二叔丁基-4-甲基苯酚 作用下,
以
甲苯 为溶剂,
反应 24.0h,
以70%的产率得到(1'S,2'S,4a'S,4b'S,8a'R,9'R,9a'S)-9'-hydroxy-1'-methoxycarbonyl-2',4',4b'-trimethyl-2'-vinylspiro[1,3-dithiane-2,7'-2',4a',4b',5',6',7',8',8a',9',9a'-decahydro-1'H-fluorene]