2-[(1S,2R,4aR,8aR)-5,5,8a-trimethylspiro[3,4,4a,6,7,8-hexahydro-1H-naphthalene-2,2'-oxirane]-1-yl]acetaldehyde 、
(2-氧代四氢呋喃-3-基)膦酸二乙酯 生成 (3E)-3-[2-[(1S,2R,4aR,8aR)-5,5,8a-trimethylspiro[3,4,4a,6,7,8-hexahydro-1H-naphthalene-2,2'-oxirane]-1-yl]ethylidene]oxolan-2-one