title: Antiproliferative sesquiterpene lactones from the roots of Inula helenium.
abstract: The MeOH extract of the roots of Inula helenium showed a high inhibitory activity for cell growth against MK-1, HeLa and B16F10 cell lines. Significant activity was found in the hexane-soluble fraction. From the hexane-soluble fraction, seven sesquiterpenes, namely, one germacrane (4beta,5alpha-epoxy-1(10),11(13)-germacradiene-8,12-olide), one elemane (igalane), and five eudesmanes (alantolactone, isoalantolactone, 11alpha,13-dihydroalantolactone, 11alpha,13-dihydro-isoalantolactone, 5-epoxyalantolactone) were isolated. In vitro antiproliferative activities of the isolates against MK-1, HeLa and B16F10 cells are reported.
authors.affiliation: Kyoto Pharmaceutical University, Japan. konishi@mb.kyoto-phu.ac.jp
authors.forename: Tenji
authors.initials: T
authors.lastname: Konishi
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Shimada
authors.forename: Tsuneatsu
authors.initials: T
authors.lastname: Nagao
authors.forename: Hikaru
authors.initials: H
authors.lastname: Okabe
authors.forename: Takao
authors.initials: T
authors.lastname: Konoshima
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000302:isolation & purification / Q000494:pharmacology; D006131:Growth Inhibitors / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D006367:HeLa Cells; D006801:Humans; D038143:Inula / Q000737:chemistry*; D007783:Lactones / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D008546:Melanoma, Experimental; D051379:Mice; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D018517:Plant Roots; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D014407:Tumor Cells, Cultured
chemical_list: D000970:Antineoplastic Agents; D006131:Growth Inhibitors; D007783:Lactones; D010936:Plant Extracts; D012717:Sesquiterpenes