to moderate forms of Alzheimer's disease, and this feature coupled with its novel molecular architecture has prompted an extensive focus on its synthesis. The present study reports a new and distinct synthesis of galanthamine wherein the AB-ring substructure and associated quaternary carbon centre are constructed by using a palladium-catalyzed intramolecular Alder-ene reaction. The product of this process
四环
生物碱加兰他敏在许多国家临床上用于轻度至中度阿尔茨海默病的对症治疗,这一特征加上其新颖的分子结构促使人们广泛关注其合成。本研究报告了一种新的、独特的
加兰他敏合成,其中 AB 环亚结构和相关的季碳中心是通过使用
钯催化的分子内阿尔德烯反应构建的。该过程的产物参与 Tsuji-Trost 型反应以生成半环二烯,该二烯参与正常电子需求的 Diels-Alder 反应,在最初形成的加合物氧化后生成芳族 C 环目标
生物碱。