The molecule is a sesterterpenoid isolated from the marine sponge Luffariella variabilis and which has been shown to exhibit inhibitory activity towards phospholipase A2. It has a role as a metabolite, an EC 3.1.1.4 (phospholipase A2) inhibitor, an EC 5.99.1.2 (DNA topoisomerase) inhibitor and an EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor. It is a butenolide, a lactol and a sesterterpenoid.
(2R)-2-hydroxy-3-[(2R,6R)-6-hydroxy-5-[(E)-4-methyl-6-(2,6,6-trimethylcyclohexen-1-yl)hex-3-enyl]-3,6-dihydro-2H-pyran-2-yl]-2H-furan-5-one