作者:Hideki Abe、Akimi Sato、Toyoharu Kobayashi、Hisanaka Ito
DOI:10.1021/ol400228v
日期:2013.3.15
A concise total synthesis of spirocurcasone was accomplished. Key features of the synthesis involved a vinylogous Mukaiyama aldol reaction, a Carroll rearrangement of β-keto allyl ester derivative, an intramolecular aldol condensation, and a spiro ring formation by ring-closing metathesis of the pentaene compound. This synthetic work was complete in nine steps from (S)- or (R)-perillaldehyde without
完成了螺环脲酮的简明全合成。合成的关键特征包括乙烯基的Mukaiyama羟醛反应,β-酮烯丙基烯丙基酯衍生物的Carroll重排,分子内羟醛缩合以及通过戊烯化合物的闭环易位形成螺环。在不使用保护基的情况下,由(S)-或(R)-紫苏醛分九步完成了该合成工作。有趣的是,合成螺环脲酮的旋光度不同于天然产物的报道值。