2-Ethyl-8-methoxymethoxy-4-(4-methoxymethoxy-phenyl)-1,2,3,3a,4,9b-hexahydro-cyclopenta[c]chromene 在
盐酸 作用下,
以
四氢呋喃 、
水 为溶剂,
生成 (2R,3aS,4R,9bR)-2-ethyl-4-(4-hydroxy-phenyl)-1,2,3,3a,4,9b-hexahydro-cyclopenta[c]chromen-8-ol 、 (2S,3aS,4R,9bR)-2-ethyl-4-(4-hydroxy-phenyl)-1,2,3,3a,4,9b-hexahydro-cyclopenta[c]chromen-8-ol 、
(2S,3aR,4S,9bS)-2-ethyl-4-(4-hydroxy-phenyl)-1,2,3,3a,4,9b-hexahydro-cyclopenta[c]chromen-8-ol 、
(2R,3aR,4S,9bS)-2-ethyl-4-(4-hydroxy-phenyl)-1,2,3,3a,4,9b-hexahydro-cyclopenta[c]chromen-8-ol