New Route to the 5,12-Dihydro-7<i>H</i>-benzo[2,3]azepino[4,5-<i>b</i>]indol-6-one Core via a Tin-Mediated Indole Synthesis
作者:Valérie Bénéteau、Nicolas Henry、Jérôme Blu、Jean-Yves Mérour
DOI:10.1055/s-2006-950328
日期:2006.11
A new route to the paullone scaffold was designed. The key step consisted in a free radical indole formation from an o-alkenyl arylisonitrile followed by Stille coupling with N-Boc-o-iodo-aniline. After deprotection and closure of the seven-membered ring by lactamisation, parent or cyano-substituted paullones were obtained in moderate to good yields.
设计了一条通往 paullone 脚手架的新路线。关键步骤包括从邻烯基芳基异腈形成自由基吲哚,然后与 N-Boc-邻碘苯胺偶联。在通过内酰胺化对七元环进行去保护和闭合后,以中等至良好的产率获得母体或氰基取代的保罗酮。