7α-Acetylugandensolide and antimicrobial properties of Warburgia ugandensis extracts and isolates against sweet potato pathogens

► The isolation and characterization of a new sesquiterpene, 7α-acetylugandensolide (1) from W. ugandensis. The compound has been isolated for the first time. However, synthetic 7α-acetylugandensolide had been reported. ► First time isolation of drimenin (3) from W. ugandensis. ► Full NMR data of bemadienolide (2) and drimenin (3).