8-<2-(1,3-Dioxolan-2-yl)phenyl>-8-methoxy-7-methyl-1,4-dioxaspiro<4.5>decane 在
对甲苯磺酸 作用下,
以
丙酮 为溶剂,
生成 (1S,8R,12R)-8-Hydroxy-1-methoxy-12-methyl-tricyclo[7.3.1.0
2,7]trideca-2(7),3,5-trien-10-one 、 (1S,8S,13R)-8-Hydroxy-1-methoxy-13-methyl-tricyclo[7.3.1.0
2,7]trideca-2(7),3,5-trien-10-one