An expeditious synthesis of the marine sesquiterpene helianane enclosing an unusual benzoxocane ring system is described employing ring-closing metathesis as the key step. Helianane has been further converted to the naturally occurring C-10 bromo and chloro derivatives.
使用闭环复分解作为关键步骤,描述了一种封闭不寻常的苯并氧杂
环戊烷环系统的海洋
倍半萜烯
戊烷的快速合成方法。Helaneane已进一步转化为天然存在的C-10
溴和
氯衍
生物。