TOTAL SYNTHESIS OF SCELETIUM (AIZOACEAE) ALKALOIDS. THE CINNAMONITRILE ROUTE. THE TOTAL SYNTHESIS OF RACEMIC O-METHYL JOUBERTIAMINE AND MESEMBRINE
作者:Ignacio H. Sanchez、F. Ramón Tallabs
DOI:10.1246/cl.1981.891
日期:1981.7.5
A new method of synthesis of Sceletium (Aizoaceae) alkaloids based on the introduction of a “formyl anion” equivalent at the β-position of a cinnamonitrile, followed by Robinson annulation and final modification of the resulting cyanomethyl side chain is described. The method has been successfully applied to the total synthesis of racemic O-methyljoubertiamine (1) and mesembrine (2).
本文介绍了一种合成 Sceletium(Aizoaceae)生物碱的新方法,该方法基于在肉桂腈的β位上引入 "甲酰基阴离子 "等价物,然后进行罗宾逊环化反应并最终修饰所产生的氰甲基侧链。该方法已成功应用于外消旋 O-甲基焦贝特胺(1)和间苯二胺(2)的全合成。