Enantioselective total synthesis of a novel polyketide natural product (+)-integrasone, an HIV-1 integrase inhibitor

Enantioselective total synthesis of the recently isolated, novel polyketide natural product (+)-integrasone has been accomplished from the readily available Diels–Alder adduct of cyclopentadiene and p-benzoquinone. An enzymatically desymmetrized epoxyquinone building block has been elaborated through a series of regio- , chemo- and stereocontrolled steps to the final bicyclic framework of the natural product.