title: Flavonoids from Astragalus hamosus.
abstract: A new flavonol glycoside 7-O-methyl-kaempferol 4'-beta-D-galactopyranoside (rhamnocitrin 4'-beta-D-galactopyranoside) (1) was isolated from the aerial parts of Astragalus hamosus. The known flavonols hyperoside (2), isoquercitrin (3) and astragalin (4) were also identified. Structures of the compounds were elucidated by chemical and spectral methods.
authors.affiliation: Faculty of Pharmacy, Department of Pharmacognosy, Sofia, Bulgaria. ikrasteva@pharmfac.acad.bg
authors.forename: Ilina
authors.initials: I
authors.lastname: Krasteva
authors.forename: Stefan
authors.initials: S
authors.lastname: Platikanov
authors.forename: Stefan
authors.initials: S
authors.lastname: Nikolov
authors.forename: Maki
authors.initials: M
authors.lastname: Kaloga
mesh_terms: D027883:Astragalus Plant / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification; D044949:Kaempferols / Q000737:chemistry / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D011794:Quercetin / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D005419:Flavonoids; D005960:Glucosides; D044949:Kaempferols; C016527:isoquercitrin; C021304:hyperoside; D011794:Quercetin; C001579:astragalin