A novel diastereoselective route to octalone (−)-1 has been developed. The key step involves an asymmetric Michael addition of the corresponding chiral secondary enamines derived from (S)-(−)-1-phenylethylamine and (3R)-2,3-dimethylcyclohexanone to methyl vinyl ketone. This enone was successfully transformed into the eremophilane-type sesquiterpenoid (−)-dehydrofukinone.
已经开发了一种新颖的非对映选择性途径,可以生成八-(- 1)-1。关键步骤涉及将衍生自(S)-(-)-1-苯基
乙胺和(3 R)-2,3-二甲基
环己酮的相应手性仲烯胺不对称迈克尔加成到甲基
乙烯基酮上。该烯酮已成功转化为全草苷型
倍半萜类(-)-脱氢富马酮。