title: Flavonoids from barrel medic (Medicago truncatula) aerial parts.
abstract: Twenty-three flavonoids have been identified in the aerial parts of barrel medic, and their structures were established by spectrometric and spectroscopic (ESI-MS/MS and NMR) techniques. Eight of the identified compounds, including apigenin 7-O-beta-D-glucuronopyranosyl-(1-->3)-O-beta-D-glucuronopyranosyl-(1-->2)-O-beta-D-glucuronopyranoside, apigenin 7-O-[2'-O-sinapoyl-beta-D-glucuronopyranosyl-(1-->2)-O-beta-D-glucuronopyranoside], apigenin 7-O-{2-O-feruloyl-[beta-D-glucuronopyranosyl-(1-->3)]-O-beta-D-glucuronopyranosyl-(1-->2)-O-beta-D-glucopyranoside}, chrysoeriol 7-O-[beta-D-glucuronopyranosyl-(1-->2)-O-beta-D-glucuronopyranoside, chrysoeriol 7-O-{2'-O-p-coumaroyl-[beta-D-glucuronopyranosyl-(1-->3)]-O-beta-D-glucuronopyranosyl(1-->2)-O-beta-D-glucuronopyranoside}, tricin 7-O-beta-D-glucuronopyranosyl-4'-O-glucopyranoside, tricin 7-O-[2'-O-feruloyl-beta-D-glucuronopyranosyl-(1-->2)-O-beta-D-glucopyranoside], and tricin 7-O-{2'-O-p-coumaroyl-[beta-D-glucuronopyranosyl-(1-->3)]-O-beta-D-glucuronopyranosyl(1-->2)-O-beta-D-glucuronopyranoside}, have not been reported before in the plant kingdom. Additionally, the presence of two luteolin, three apigenin, one chrysoeriol, and six tricin glycosides, previously identified in alfalfa (Medicago sativa), was confirmed in M. truncatula. Moreover, besides the above flavones, the aerial parts of this species contained three flavonols including rutin, laricitrin 3,7,5'-triglucoside, and laricitrin 3,5'-diglucoside.
authors.affiliation: Department of Biochemistry, Institute of Soil Science and Plant Cultivation, ul. Czartoryskich 8, 24-100 Pulawy, Poland.
authors.forename: Iwona
authors.initials: I
authors.lastname: Kowalska
authors.forename: Anna
authors.initials: A
authors.lastname: Stochmal
authors.forename: Ireneusz
authors.initials: I
authors.lastname: Kapusta
authors.forename: Bogdan
authors.initials: B
authors.lastname: Janda
authors.forename: Cosimo
authors.initials: C
authors.lastname: Pizza
authors.forename: Sonia
authors.initials: S
authors.lastname: Piacente
authors.forename: Wieslaw
authors.initials: W
authors.lastname: Oleszek
mesh_terms: D005419:Flavonoids / Q000032:analysis*; D035264:Flowers / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D046913:Medicago truncatula / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D012431:Rutin / Q000032:analysis; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D005419:Flavonoids; D012431:Rutin