Cyathusal B

Cyathusal B is an organic heterotricyclic compound that is 1H,6H-pyrano[4,3-c]isochromene-7-carbaldehyde substituted by hydroxy groups at positions 6, 9 and 10, methoxy group at position 8, oxo group at position 1 and a propenyl group at position 3. It is isolated from the fermented mushroom Cyathus stercoreus and exhibits radical scavenging activities. It has a role as a radical scavenger and a fungal metabolite. It is a delta-lactone, a polyketide, a polyphenol, an organic heterotricyclic compound, an arenecarbaldehyde, an aromatic ether and a cyclic ether.