title: Sesquiterpenoids and phenolics from roots of Taraxacum udum.
abstract: From roots of Taraxacum udum, two new and four known sesquiterpene lactones were isolated, together with five known phenolic compounds. The new compounds were characterized as 11beta, 13-dihydrotaraxinic acid and taraxinic acid 6-O-acetyl-beta-glucopyranosyl ester by spectroscopic methods, especially 1D and 2D NMR, and by comparison with structurally related compounds. The plant material was shown to be a good source of taraxinic acid derivatives.
authors.affiliation: Department of Phytochemistry, Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland.
authors.forename: Klaudia
authors.initials: K
authors.lastname: Michalska
authors.forename: Jolanta
authors.initials: J
authors.lastname: Marciniuk
authors.forename: Wanda
authors.initials: W
authors.lastname: Kisiel
mesh_terms: D007783:Lactones / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D010636:Phenols / Q000302:isolation & purification*; D010936:Plant Extracts / Q000737:chemistry*; D018517:Plant Roots; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification*; D031205:Taraxacum / Q000737:chemistry*
chemical_list: C554308:11beta,13-dihydrotaraxinic acid; D007783:Lactones; D010636:Phenols; D010936:Plant Extracts; D012717:Sesquiterpenes; C554309:taraxinic acid 6-O-acetyl-beta-glucopyranosyl ester