The molecule is a sesquiterpene lactone that is a 3alpha-hydroxy epimer of heliangin. Isolated from Eupatorium kiirunense, it exhibits cytotoxicity against human oral epidermoid (KB), cervical epitheloid (Hela) and liver (hepa59T/VGH) carcinoma cells. It has a role as a metabolite and an antineoplastic agent. It is an enoate ester, an epoxide and a sesquiterpene lactone. It derives from a tiglic acid.
[(1R,2R,4R,6R,8R,9E,11R)-8-hydroxy-4,9-dimethyl-14-methylidene-13-oxo-5,12-dioxatricyclo[9.3.0.04,6]tetradec-9-en-2-yl] (E)-2-methylbut-2-enoate