作者:Morgan Cormier、Florian Hernvann、Michaël De Paolis
DOI:10.3762/bjoc.18.183
日期:——
of α,α’-dimethoxy-γ-pyrone leading to α-crotyl-α’-methoxy-γ-pyrone in one step. To construct the quaternary carbon of the 2,5-cyclohexadienone of the target, a strategy based on the Robinson-type annulation of an aldehyde derived from α-crotyl-α’-methoxy-γ-pyrone was applied. The grafting of the simplified target’s side chain was demonstrated through an oxidative anionic oxy-Cope rearrangement of the
描述了一种利用 α,α'-二甲氧基-γ-吡喃酮的去对称化一步生成 α-巴豆基-α'-甲氧基-γ-吡喃酮的 tridachiapyrone B 骨架的收敛方法。为了构建目标 2,5-环己二烯酮的季碳,采用了一种基于源自 α-巴豆基-α'-甲氧基-γ-吡喃酮的醛的 Robinson 型环化的策略。通过将 1,3-二甲基烯丙基试剂 1,2-加成到连接到 α'- 的 2,5-环己二烯酮而产生的叔醇的氧化阴离子氧-Cope 重排证明了简化目标侧链的接枝甲氧基-γ-吡喃酮基序。