An efficient stereoselective route to the construction of tricyclic core structure towards the synthesis of the sesquiterpenes of the seco-prezizaane family

An efficient stereoselective approach to the construction of a hydrindane derivative having a bridged lactone is described toward the synthesis of the sesquiterpenes of the seco-prezizaane family. The key step involves RO-RCM of a norbornene derivative.