The molecule is an azaphilone that is 7,8-dihydro-6H-isochromen-6-one substituted by a hydroxy group at position 7, a 4-hydroxy-2-methyl-6-oxocyclohexyl group at position 3, a methyl group at position 7 and a 5,7,9-trimethyl-2-oxoundeca-3,5-dien-1-yl group at position 8. Isolated from Chaetomium longirostre, it exhibits cytotoxic and antimalarial activities. It has a role as an antimalarial, an antineoplastic agent and a Chaetomium metabolite. It is an azaphilone, an organic heterobicyclic compound, an enone and a tertiary alpha-hydroxy ketone.
(7R,8S)-7-hydroxy-3-[(1S,2S,4R)-4-hydroxy-2-methyl-6-oxocyclohexyl]-7-methyl-8-[(3E,5E)-5,7,9-trimethyl-2-oxoundeca-3,5-dienyl]-8H-isochromen-6-one