The molecule is a sesquiterpene lactone that is isolated from several Streptomyces species and exhibits antibiotic activity. It has a role as an antimicrobial agent, an EC 1.2.1.12 [glyceraldehyde-3-phosphate dehydrogenase (phosphorylating)] inhibitor and a bacterial metabolite. It is a sesquiterpene lactone, an alpha,beta-unsaturated monocarboxylic acid, a spiro-epoxide and an organic heterotricyclic compound. It is a conjugate acid of a pentalenolactone(1-).
(1R,4aR,6aR,7S,9aS)-7,8-dimethyl-2-oxospiro[4,4a,6a,7-tetrahydropentaleno[1,6a-c]pyran-1,2'-oxirane]-5-carboxylic acid