Isolation, Structure, Absolute Stereochemistry, and HIV-1 Integrase Inhibitory Activity of Integrasone, a Novel Fungal Polyketide

Abstract
HIV-1 integrase is a critical enzyme for replication of HIV, and its inhibition is one of the most promising new drug targets for anti-retroviral therapy with potentially significant advantages over existing therapies. In this Note, the isolation, structure elucidation, and absolute stereochemistry of integrasone, a novel polyketide, derived from an unidentified sterile mycelium have been described. This bicyclic dihydroxy epoxide lactone inhibited the strand transfer reaction of HIV-1 integrase with an IC50 of 41 μM.