title: Inhibitory effect on TNF-alpha-induced IL-8 production in the HT29 cell of constituents from the leaf and stem of Weigela subsessilis.
abstract: Twelve compounds were isolated from the MeOH extract of the leaf and stem of the Korean endemic plant Weigela subsessilis L. H. Bailey. Their chemical structures were elucidated on the basis of physicochemical and spectroscopic data and by comparison with those of published literatures. These compounds were identified as three sterols, beta-sitosterol acetate (2), betasitosterol (3), daucosterol (11), eight triterpenoids, squalene (1), ursolic acid (4), ilekudinol A (5), corosolic acid (6), ilekudinol B (7), esculentic acid (8), pomolic acid (9), asiatic acid (10), and one iridoid glycoside, alboside I (12). This is the first report pertaining to the isolation of these compounds from Weigela subsessilis L. H. Bailey. In addition, three compounds 7, 9, and 12 were found to display a strong inhibitory effect on the production of IL-8 in the HT29 cells stimulated by TNF-alpha.
authors.affiliation: College of Pharmacy, Chungnam National University, Daejeon, Korea.
authors.forename: Phuong Thien
authors.initials: PT
authors.lastname: Thuong
authors.forename: WenYi
authors.initials: W
authors.lastname: Jin
authors.forename: JongPill
authors.initials: J
authors.lastname: Lee
authors.forename: RackSeon
authors.initials: R
authors.lastname: Seong
authors.forename: Young-Mi
authors.initials: YM
authors.lastname: Lee
authors.forename: YeonHee
authors.initials: Y
authors.lastname: Seong
authors.forename: KyungSik
authors.initials: K
authors.lastname: Song
authors.forename: KiHwan
authors.initials: K
authors.lastname: Bae
mesh_terms: D027922:Caprifoliaceae / Q000737:chemistry*; D004305:Dose-Response Relationship, Drug; D019073:HT29 Cells; D049691:History, Medieval; D006801:Humans; D016209:Interleukin-8 / Q000037:antagonists & inhibitors* / Q000096:biosynthesis; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D018515:Plant Leaves / Q000737:chemistry*; D018547:Plant Stems / Q000737:chemistry*; D013329:Structure-Activity Relationship; D014409:Tumor Necrosis Factor-alpha / Q000494:pharmacology*
chemical_list: D016209:Interleukin-8; D010936:Plant Extracts; D014409:Tumor Necrosis Factor-alpha