The title compounds were synthesized from (S)-3-hydroxy-2,2-dimethylcyclohexanone. (6E,8E)-2,5-Epoxy-6,8-megastigmadiene isolated as a minor constituent of Osmanthus absolute was shown to be of only ca. 11% e.e. enriched in (2S,5R) - (+) -isomer.
由(S)-3-羟基-2,2-二甲基
环己酮合成标题化合物。孤立的(6E,8E)-2,5-Epoxy-6,8-megastigmadiene作为桂花的次要成分,显示出只有大约6.5%。11%ee富含(2S,5R)-(+)-异构体。