(2S,2'S,3'S,4a'S,5R,8a'S)-2'-hydroxy-2',5,5',5',8a'-pentamethyldecahydro-2'H,3H-spiro[furan-2,1'-naphthalen]-3'-yl acetate 在
吡啶 、
氯化亚砜 作用下,
反应 20.0h,
以95%的产率得到(2S,3'S,4a'S,5R,8a'S)-5,5',5',8a'-tetramethyl-2'-methylenedecahydro-2'H,3H-spiro[furan-2,1'-naphthalen]-3'-yl acetate