(3S,5aS,6S,7R)-6-{2-[3-Hydroxy-2,6-dimethyl-6-(4-methyl-pent-3-enyl)-cyclohex-1-enyl]-ethyl}-2,2,5a,7-tetramethyl-decahydro-benzo[b]oxepine-3,7-diol 在
chromium(VI) oxide 、
硫酸 作用下,
以
水 、
丙酮 为溶剂,
生成
(5aS,6S,7R)-6-{2-[2,6-Dimethyl-6-(4-methyl-pent-3-enyl)-3-oxo-cyclohex-1-enyl]-ethyl}-7-hydroxy-2,2,5a,7-tetramethyl-octahydro-benzo[b]oxepin-3-one