Nidulin is a depsidone produced by several fungal species with potent and selective antibacterial activity. While literature relating to nidulin is limited, it is closely related to folipasatin and unguinol, both of which have been identified as inhibitors of phospholipase A2, arachidonic acid release from rat polymorphonuclear leukocytes, and nitrendipine binding to porcine heart membrane. While showing some calcium blocking attributes, these metabolites have potential as antiinflammatory agents.
![2,4,7-Trichloro-3-hydroxy-8-methoxy-1,9-dimethyl-6-(1-methyl-1-propenyl)-11H-dibenzo[b,e][1,4]dioxepin-11-one Structure](/CAS/GIF/10089-10-8.gif)
