the synthesis of both enantiomers of a functionalized bicyclo[3.2.1]octenone, which is potentially useful as a versatile chiral buildingblock, has been developed from 1,4-cyclohexanedione monoethylene acetal by employing proline-catalyzed diastereoselective intramolecular aldolization and lipase-mediated kinetic resolution as the key steps. The synthetic utility of the bicyclo[3.2.1]octenone has been