A new stereoselective synthesis of paeonilactone B has been achieved
in ten steps and in 11.5% overall yield starting from the
enantiomerically enriched terpenol 2. Key
synthetic steps are based on a regioselective metalation and on
a regio- and diastereoselective epoxidation.
natural product - terpene - metalation - homoallylic
epoxidation - lactone