Oxidative Friedel−Crafts Reaction and its Application to the Total Syntheses of <i>Amaryllidaceae</i> Alkaloids
作者:Kimiaka C. Guérard、Cyrille Sabot、Léanne Racicot、Sylvain Canesi
DOI:10.1021/jo802728u
日期:2009.3.6
numerous natural products. As an illustration of the potential of this transformation, total syntheses of compounds belonging to the Amaryllidaceae alkaloids family such as O-methyljoubertiamine, mesembrine, and its natural derivative the dihydro-O-methylsceletenone have been achieved in eight/nine steps. The synthetic route to these molecules features a novel and efficient transformation on the basis
使用多取代的苯酚,已经进行了涉及由高价碘试剂介导的不同芳族化合物的氧化弗里德-克来福特反应。该策略符合“芳香环化合物”的概念,这为化学合成开辟了新的机会。该反应以有用的收率进行,并且允许快速获得包含二烯酮,季碳中心和芳环的高度官能化的化合物。产品的骨架存在于多种天然产品中。作为该变换的电势的示图,属于化合物的全合成石蒜生物碱家族如ö -methyljoubertiamine,mesembrine,及其天然衍生物的二氢Ò在八/九个步骤中获得了甲基-甲基司烯酮。在Fukuyama和Michael-retro-Michael串联工艺的基础上,合成这些分子的方法具有新颖而有效的转化方式,以生产所需的含氮环系统。