Über die struktur neuer und bekannter flavon-C-Glykoside I.

Hörhammer, L.; Wagner, H.; Rosprim, L.; Mabry, Tom J.; Rösler, Heinz

doi:10.1016/s0040-4039(00)90113-8

Cited by 20 publications

(6 citation statements)

References 3 publications

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“…UV and mass spectra indicated that the phenolic composition of the The presence of flavonoid glycosides was previously reported in German (Hörhammer, Wagner, Rosprim, Mabry, & Rösler, 1965;Wagner, Rosprim, & Düll, 1972), Hungarian (Vukics et al, 2008a,b) and Brazilian (Gonçalves, Friedrich, Boligon, Piana, Beck, & Athayde, 2012) samples of Viola tricolor.…”

Section: Individual Phenolic Compoundssupporting

confidence: 53%

Edible flowers of Viola tricolor L. as a new functional food: Antioxidant activity, individual phenolics and effects of gamma and electron-beam irradiation

et al. 2015

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Section: Individual Phenolic Compoundssupporting

confidence: 53%

Edible flowers of Viola tricolor L. as a new functional food: Antioxidant activity, individual phenolics and effects of gamma and electron-beam irradiation

et al. 2015

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“…Several flavonoids, mostly flavone C-glycosides, have been isolated from leaves of barley (Bekele, 1983;Fro ¨st et al, 1977;Liu et al, 1995;Osawa et al, 1992). However, generally 1 H NMR results of flavonoid Cglycosides are limited, most likely because of difficulties in finding the relevant measuring conditions (Besson et al, 1985;Chopin et al, 1974;Haribal and Renwick, 1998;Ho ¨rhammer et al, 1965;Krauze-Baranowska and Cisowski, 1995;Marston et al, 1976;Theodor et al, 1980Theodor et al, , 1981. For example, for the flavonoid 6-C-glucoside-7-O-glucosides isolated from barley we observe two rotational isomers.…”

Section: Introductionmentioning

confidence: 77%

Identification of Flavone C-Glycosides Including a New Flavonoid Chromophore from Barley Leaves (Hordeum vulgare L.) by Improved NMR Techniques

Nørbæk

Brandt

Kondo

2000

J. Agric. Food Chem.

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Six flavone C-glycosides were isolated from young leaves of barley. One of the C-glucosides has a new type of nucleus, a 2',4',5,5', 7-penta-OH-substituted flavone bearing a 6-C-beta-D-glucoside, which has apparently never been isolated before. One mono- and two di-C-glycosyl flavones were isolated for the first time from barley and identified as isoscoparin 7-O-beta-D-glucoside, carlinoside, and shaftoside, respectively. Other flavones were 7-O-beta-D-glucosides of isoorientin and isovitexin. The known problematic NMR structure elucidation of C-glycosyl flavonoids has been solved by using both a temperature close to the freezing point of the solvent (22.5 degrees C in DMSO-d(6)) and a high temperature (70, 90 degrees C) for comparison during NMR measurements. Structural determination of all the compounds was achieved by employing 1D and 2D NMR techniques.

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“…3 The main flavonoid in V. arvensis was reported to be rutin. 4 This compound 5 and also several flavone C-glycosidessviolanthin, 6 vitexin, saponaretin, orientin, isoorientin, and vicenin-2, 7 swere found in V. tricolor.…”

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confidence: 97%