title: A dihydroflavonol with taxonomic significance from the fern Notholaena sulphurea.
abstract: A new flavonoid, 2,3-trans-5,2'-dihydroxy-7,8-dimethoxy-dihydroflavonol-3-O-acetate, was isolated from the farinose coating on the lower leave surface of the fern, Notholaena sulphurea. The 2,3-cis diastereoisomer was isolated as a co-constituent. This novel acylated flavonoid is characteristic for the chemotype of N. sulphurea exhibiting yellow frond exudate. Its orrurrence underlines the affiliation of the species with the genus Notholaena.
authors.affiliation: Institut für Botanik der Technischen Universität, Darmstadt, Germany. Wollenweber@bio.tu-darmstadt.de
authors.forename: E
authors.initials: E
authors.lastname: Wollenweber
authors.forename: M
authors.initials: M
authors.lastname: Dörr
authors.forename: J F
authors.initials: JF
authors.lastname: Stevens
mesh_terms: D002851:Chromatography, High Pressure Liquid; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D044948:Flavonols; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008968:Molecular Conformation; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry; D010944:Plants / Q000737:chemistry* / Q000145:classification*
chemical_list: C436146:5,2'-dihydroxy-7,8-dimethoxy-dihydroflavonol-3-O-acetate; D005419:Flavonoids; D044948:Flavonols