efficient reductive methylation of the tricyclic ketone in anhydrous ammonia provided the β,γ-unsaturated ketone in high yield which was subsequently converted into (±)-shonanyl methyl ether () and (±)-ferruginyl methyl ether ().
三环酮在无
水氨中的有效还原甲基化以高收率提供了β,γ-不饱和酮,随后将其转化为(±)-
呋喃基甲基醚()和(±)-
呋喃基甲基醚()。