Highly efficient Synthesis of the Optically Active Sesquiterpene Hydroquinone (+)-Zonarol and the Sesquiterpene Quinone (+)-Zonarone

A facile synthesis of the sesquiterpene hydroquinone (+)-zonarol 5 and sesquiterpene quinone (+)-zonarone 6 from manool is reported in 7 and 8 steps, respectively.