We have developed and rationalized a biomimetic transformation mimicking halimane synthases based on a Lewis acid-catalyzed cascade of cyclizations and rearrangements of epoxypolyprenes. Two rings, three stereogenic centers, and a new double bond were generated in a single chemical operation. Based on this cascade transformation, we achieved a unified strategy toward the stereoselective total syntheses
我们已经开发并合理化了模仿路易斯烷合酶的仿生转化,该转化基于
路易斯酸催化的环化和环氧聚
戊二烯重排的级联反应。在一次
化学操作中生成了两个环,三个立体异构中心和一个新的双键。基于这种级联变换,我们实现了针对哈林烯型
萜类化合物和类似物的立体选择性全部合成的统一策略,作为概念验证研究。该方法已经用于快速合成二萜异结核菌醇,其是代表性的结核分枝杆菌的致病因子。