Total Synthesis of (±)-Lennoxamine and (±)-Aphanorphine by Intramolecular Electrophilic Aromatic Substitution Reactions of 2-Amidoacroleins
作者:James R. Fuchs、Raymond L. Funk
DOI:10.1021/ol016795b
日期:2001.11.1
Intramolecular electrophilic aromatic substitution reactions of 2-amidoacroleins constitute the key steps in the total syntheses of lennoxamine and aphanorphine. The aldehyde moiety of one cyclization product was transformed to a double bond, which was then engaged in a radical cyclization to produce the complete ring system of lennoxamine. The aldehyde functionality of the other cyclization product
2-酰胺基丙烯醛的分子内亲电芳族取代反应构成了伦诺沙明和甲啡肽的总合成中的关键步骤。将一种环化产物的醛部分转化为双键,然后将其进行自由基环化,以生成lennoxamine的完整环系。将另一种环化产物的醛官能团转化为相应的甲磺酸酯,其通过内酰胺烯醇酯进行分子内置换,以提供甲啡肽的环系统。[反应:看文字]