A short total synthesis of (±)-mersicarpine <i>via</i> visible light-induced cascade photooxygenation
作者:Mario Frahm、Alice Voss、Malte Brasholz
DOI:10.1039/d2cc01316a
日期:——
A short total synthesis of the Kopsia alkaloid (±)-mersicarpine is presented. As the key step, a visible light-induced catalytic cascade photooxygenation was utilized, to convert a 3,3-disubstituted tetrahydrocarbazole intermediate, in one step, into a perhydropyrido[1,2-a]indole dione as the immediate precursor to the natural product. The synthesis of mersicarpine was achieved with an overall yield
介绍了Kopsia生物碱 (±)-mersicarpine的简短全合成。作为关键步骤,利用可见光诱导的催化级联光氧化,一步将 3,3-二取代四氢咔唑中间体转化为全氢吡啶并[1,2- a ]吲哚二酮作为天然产物的直接前体。产品。mersicarpine 的合成经过 13 个步骤以 12% 的总产率实现。