Concise construction of the tetracyclic core of lycorine-type alkaloids and the formal synthesis of α-lycorane based on asymmetric bifunctional thiourea-catalyzed cascade reaction
作者:Yao Wang、Yong-Chun Luo、Hong-Bo Zhang、Peng-Fei Xu
DOI:10.1039/c2ob26422f
日期:——
A concise and stereoselective construction of the tetracyclic core of lycorine-type alkaloids and the formal synthesis of α-lycorane has been achieved. The feature of the current method is the employment of a bifunctional thiourea-catalyzed cascade reaction as a powerful tool to construct the skeleton of the natural product, which is a challenging yet very rarely explored strategy. As a result, the
精简和立体选择性的结构的lycorine型生物碱的四环核心和α-lycorane的形式合成已经实现。当前方法的特点是采用双功能硫脲催化的级联反应作为构建天然产物骨架的有力工具,这是一项极富挑战性但很少探索的策略。结果,仅在涉及两个连续的级联反应的三个简单操作中就有效地合成了四环核。