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Further knowledge on barley (Hordeum vulgare L.) leaves O-glycosyl-C-glycosyl flavones by liquid chromatography-UV diode-array detection-electrospray ionisation mass spectrometry

AuthorsFerreres, Federico ; Andrade, Paula B.; Valentão, Patricia; Gil-Izquierdo, Ángel
KeywordsO-Glycosyl-C-glycosyl flavones
Acylated derivatives
Mass spectrometry
Hordeum vulgare
Issue Date22-Feb-2008
CitationJournal of Chromatography A 1182(1): 56-64 (2008)
AbstractThirty-seven flavonoids and a hydroxycynnamic acid have been characterized in barley leaves (Hordeum vulgare L.) by liquid chromatography-UV diode-array coupled to ion trap mass spectrometry with electrospray ionisation interface (negative mode). Their structures have been determined by the study of the ion mass fragmentation which characterizes C-glycosyl flavones and O-glycosyl-C-glycosyl flavones, and differentiates di-O-glycosyl flavones from O-diglycosyl-flavones. The majority of them are described for the first time in barley. Saponarin (isovitexin-7-O-glucoside), lutonarin (isoorientin-7-O-glucoside) and isoscoparin-7-O-glucoside derivatives constitute the major part of the detected compounds. Some acylated derivatives are also described, namely, 7-O-[6-acyl]-glucoside and -7-O-[6-acyl]-glc-4′-glucoside of isovitexin, isoorientin and isoscoparin.
Description9 pages, 5 figures, 4 tables.
Publisher version (URL)http://dx.doi.org/10.1016/j.chroma.2007.12.070
Appears in Collections:(CEBAS) Artículos
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