Flavonoids from barrel medic (Medicago truncatula) aerial parts.
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.
Kowalska
Iwona
I
Department of Biochemistry, Institute of Soil Science and Plant Cultivation, ul. Czartoryskich 8, 24-100 Pulawy, Poland.
Stochmal
Anna
A
Kapusta
Ireneusz
I
Janda
Bogdan
B
Pizza
Cosimo
C
Piacente
Sonia
S
Oleszek
Wieslaw
W
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
D005419:Flavonoids; D012431:Rutin