Simple and facile synthetic routes for the preparation of biologically interesting cyclol bearing polycycles were developed using FeCl3-promoted [2 + 2] cycloaddition from readily available benzopyrans possessing a variety of substituents. As examples of this methodology, one-step syntheses of cannabicyclol, cannabicyclovarin, and ranhuadujuanine A were accomplished in good yield.
利用 FeCl3 促进的 [2 + 2] 环加成反应,从容易获得的具有多种取代基的苯并
吡喃中开发出简单易行的合成路线,用于制备具有
生物学意义的
环醇多环。作为该方法的例子,
大麻二
环醇、
大麻二环素和ranhuadujuanine A 的一步合成以良好的产率完成。