ChEBI: Drummondin E is a member of the class of resorcinols that is a derivative of filicinic acid. Isolated from the stems and leaves of Hypericum drummondii, it exhibits antibacterial activity against Gram-positive bacteria Staphylococcus aureus and Bacillus subtilis and the acid fast bacterium Mycobacterium smegmatis. It has a role as a metabolite and an antibacterial agent. It is a methyl ketone, a member of resorcinols, an enol, an enone, an aromatic ether and an aromatic ketone. It is functionally related to a filicinic acid.