title: A new sesquiterpene keto-lactone from Senecio.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D007659:Ketones / Q000032:analysis; D007783:Lactones / Q000032:analysis; D010946:Plants, Medicinal / Q000032:analysis*; D013729:Terpenes / Q000032:analysis*
chemical_list: D007659:Ketones; D007783:Lactones; D013729:Terpenes