A divergent and novel protocol for the preparation of both pyrido[2,3,4-kl]acridine and pyrido[4,3,2-kl]acridine alkaloids was developed. This method featured the remote palladium-catalyzed reductive cyclization with Mo(CO)6 as reductant. A wide range of substrates including three types of nitro arenes were tolerated and afforded corresponding products in good to excellent yields. This method has been
开发了一种用于制备
吡啶并[2,3,4- kl ]
吖啶和
吡啶并[4,3,2- kl ]
吖啶生物碱的新方案。该方法的特点是使用 Mo(CO) 6作为还原剂进行远程
钯催化的还原环化反应。包括三种硝基
芳烃在内的各种底物都可以耐受,并以良好到极好的产率提供相应的产品。该方法已成功应用于去甲西哥林、
苯乙烯胺C和necatorone骨架的全合成。