Enantioselective Total Synthesis of (+)-Peniciketals A and B: Two Architecturally Complex Spiroketals
作者:Yifan Deng、Chia-Ping H. Yang、Amos B. Smith III
DOI:10.1021/jacs.0c11424
日期:2021.2.3
(+)-peniciketals A and B, two members of a family of architecturally complex spiroketals, have been achieved. Key synthetic transformations comprise Type I Anion Relay Chemistry (ARC) to construct the benzannulated [6,6]-spiroketal skeleton, a Negishi cross-coupling/olefin cross-metathesis reaction sequence to generate the trans-enone structure, and a late-stage large fragment union exploiting our recently
(+)-peniciketals A 和 B(结构复杂的螺旋缩酮家族的两个成员)的对映选择性全合成已经实现。关键的合成转化包括 I 型阴离子中继化学 (ARC) 以构建苯环化 [6,6]-螺缩酮骨架、Negishi 交叉偶联/烯烃交叉复分解反应序列以生成反式烯酮结构,以及后期利用我们最近开发的光异构化/环化策略的大片段联合。