Palladium-mediated domino oxidative amination of cyclohexadienes as an entry to indole alkaloids
作者:Dawood Hosni Dawood、Redouane Beniazza、Frédéric Robert、Yannick Landais
DOI:10.1016/j.tet.2018.12.043
日期:2019.2
reaction on cyclohexa-2,5-dienes has been developed, leading to the tetracyclic indoline skeleton of aspidosperma and strychnos alkaloids. The allyl-palladium intermediate, generated after the double oxidative amination, could be trapped by an internal nucleophile to allow the construction of 3 rings in a single step. Approaches to the synthesis of strychnine and mossambine is finally reported.
上环己-2,5-二烯钯-介导的双氧化胺化反应已经被开发,导致的四环吲哚啉骨架白坚木属和马钱子生物碱。在两次氧化胺化后生成的烯丙基钯中间体可能会被内部亲核试剂捕获,从而允许在单个步骤中构建3个环。终于报道了士的宁和莫桑比克的合成方法。