(3E)-3-[2-[(1'S,4'aR,8'aR)-5',5',8'a-trimethylspiro[1,3-dioxolane-2,2'-3,4,4a,6,7,8-hexahydro-1H-naphthalene]-1'-yl]ethylidene]oxolan-2-one 在
盐酸 作用下,
以
丙酮 为溶剂,
生成
(3E)-3-[2-[(1S,4aR,8aR)-5,5,8a-trimethyl-2-oxo-3,4,4a,6,7,8-hexahydro-1H-naphthalen-1-yl]ethylidene]oxolan-2-one