Dehydroleucodin

Lidbeckialactone

dehydroleucodine

3-Methylene-6,9-dimethyl-3,3aβ,4,5,9aβ,9bα-hexahydroazuleno[4,5-b]furan-2,7-dione

(3aS)-6,9-Dimethyl-3-methylene-3,3a,4,5,9aβ,9bα-hexahydroazuleno[4,5-b]furan-2,7-dione

(3aS)-3-Methylene-6,9-dimethyl-3,3aβ,4,5,9aβ,9bα-hexahydroazuleno[4,5-b]furan-2,7-dione