p-nitrophenyl (+)-(1'R,2'S,5'S)-(2',7'-epoxy-2'-isopropyl-5'-methylcyclohex-1'-yl)acetate 在
高氯酸 作用下,
以
四氢呋喃 、
水 为溶剂,
生成 (1R,4S,6R)-1-(1'-hydroxy-1'-methylethyl)-4-methyl-9-oxabicyclo[4.3.0]nonan-8-one 、 (1S,6R,8S)-1-hydroxy-2,2,8-trimethyl-3-oxabicyclo[4.4.0]decan-4-one