Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 49, Issue 2, Pages 753-758Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jf000876p
Keywords
Medicago sativa; flavone glucuronides; acylated flavones; adenosine
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Nine flavones and adenosine have been identified in aerial parts of alfalfa, and their structures were established by spectral (FABMS and NMR) techniques. Five of the identified compounds, including apigenin 7-O-[beta -D-glucuronopyranosyl(1-->2)-O-beta -D-glucuronopyranosyl]-4'-O-beta -D-glucuronopyranoside, apigenin 7-O-[2-O-feruloyl-beta -D-glucuronopyranosyl(1-->2)-O-beta -D-glucuronopyranosyl]-4'-O-beta -D-glucuronopyranoside, apigenin 7-O-{2-O-feruloyl-[beta -D-glucuronopyranosyl(1-->3)]-O-beta -D-glucuronopyranosyl( 1-->2)-O-beta -D-glucuronopyranoside}, apigenin 7-O-{2-O-p-coumaroyl-[beta -D-glucuronopyranosyl(1-->3)]-O-beta -D-glucuronopyranosyl(1-->2)-O-beta -D-glucuronopyranoside}, and luteolin 7-O-[2-O -feruloyl-beta -D-glucuronopyranosyl(1-->2)-O-beta -D-glucuronopyranosyl]-4'-O-beta -D-glucuronopyranoside, have not been reported before in the plant kingdom. Additionally, five known compounds, including apigenin 7-O-beta -D-glucuronopyranoside, apigenin 4'-O-beta -D-glucuronopyranoside, apigenin 7-O-[beta -D-glucuronopyranosyl(1-->2)-O-beta -D-glucuronopyranoside], luteolin 7-O-beta -D-glucuronopyranoside, and adenosine, were identified.
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