The molecule is a sesquiterpene lactone that is the 5alpha-epoxy derivative of alantolactone. Isolated from the root extracts of Inula helenium, it exhibits antimycobacterial activity. It has a role as a metabolite and an antimycobacterial drug. It is a naphthofuran, a sesquiterpene lactone and an epoxide. It derives from an alantolactone.
(1R,3S,4R,8R,10R,14S)-10,14-dimethyl-5-methylidene-2,7-dioxatetracyclo[8.4.0.01,3.04,8]tetradecan-6-one