title: New tetrasaccharide flavonol glycoside from Epimedium acuminatum.
abstract: A new tetrasaccharide flavonol glycoside was isolated from the aerial parts of Epimedium acuminatum, along with three known flavonoids. The structure of the new compound, named acuminatoside [1], was established to be anhydroicaritin-3-O-alpha-L-rhamnopyranosyl(1----2)-alpha-L-rhamno pyranoside-7- O-beta-D-glucopyranosyl-(1----2)-beta-D-glucopyranoside by means of spectroscopic techniques (uv, eims, fdms, fabms, 1H nmr, 1H-1H COSY, 2D-J, 13C nmr, APT, and 1H-13C HETCOR) and chemical methods (acid hydrolysis, enzymatic hydrolysis, and tlc-densitometry). The known compounds were identified as icariin, epimedoside A, and kaempferitrin.
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing.
authors.forename: B H
authors.initials: BH
authors.lastname: Hu
authors.forename: L D
authors.initials: LD
authors.lastname: Zhou
authors.forename: Y L
authors.initials: YL
authors.lastname: Liu
mesh_terms: D002240:Carbohydrate Sequence; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D015394:Molecular Structure
chemical_list: D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D006027:Glycosides; C076341:acuminatoside