The molecule is a member of the class of xanthones that is 1,2,3,4,4a,9a-hexahydro-9H-xanthen-9-one substituted by hydroxy groups at positions 1, 4 and 8, methyl groups at positions 3 and 4a and a methoxy group at position 6 (the 1S,3S,4S,4aS,9aS stereoisomer). Isolated from the marine algicolous fungus Monodictys putredinis, it exhibits antineoplastic activity. It has a role as a metabolite and an antineoplastic agent. It is a member of phenols, an aromatic ether and a secondary alcohol.
(1S,3S,4S,4aS,9aS)-1,4,8-trihydroxy-6-methoxy-3,4a-dimethyl-2,3,4,9a-tetrahydro-1H-xanthen-9-one