Flavonol Glycosides from Paederia scandens var. mairei
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چکیده
منابع مشابه
Flavonol Glycosides from Paederia scandens
Four kaempferol glycosides and five quercetin glycosides have been isolated from a methanolic extract of Paederia scandens var. mairei leaves and stems, in which in addition four un known glycosides of kaempferol and quercetin are present in a trace. Nine flavonol glycosides including a new glycoside quercetin 3-0-rutinoside-7-0-xylosylglucoside (paederinin) were identified by PC, HPLC, UV spe...
متن کاملUDP-D-Glucose: Flavonol 3 -0 - and 7-O-Glucosyl Transferases from Young Leaves of Paederia scandens var. mairei
Tw o different O -glucosyl transferases (F 3 G T and F 7 G T ) catalyzing the transfer o f D-glucose from U D P-D -glucose to the 3 and 7 positions o f flavonol, respectively, were isolated from the young leaves o f Paederia scandens var. mairei. F 3 G T and F 7 GT, which were recov ered in about a 1:1 ratio in the activity, were purified by about 140and 136-fold, respectively, by precipitatio...
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Detailed chemical investigation of the herb Sarcopyramis bodinieri var. delicate resulted in the isolation of two new flavonol glycosides, namely, isorhamnetin-3-O-(6''-OE-feruloyl)-beta-D-glucopyranoside (1) and isorhamnetin-3-O-(6''-O-E-feruloyl)-beta-Dgalactopyranoside (2). In addition, four known compounds, quercetin-3-O-(6''-acetyl)-beta-Dglucopyranoside (3), isorhamnetin-3-O-(6''-acetyl)-...
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Five new flavonol glycosides (1, 3, 5-7) were isolated from the aerial parts of Epimedium pubescens Maxim., along with two known compounds, sagittasine C (2) and 4',5-dihydroxyl-8-(3,3-dimethylallyl)-flavonol 3-O-[β-D-xylopyranosyl(1→3)-4-O-acetyl-α-L-rhamnopyranoside]-7-O-β-D-glucopyranoside (4). The structures were elucidated on the basis of their 1D-, 2D-NMR, MS, UV and IR spectra data.
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A new flavonol triglycoside, rhamnocitrin-3-O-neohesperoside-4'-O-glucoside was isolated from the ethanol extract of Cadaba glandulosa together with two known diglycosides rhamnocitrin-3-O-neohesperoside and rhamnetin-3-neohesperoside. Characterization of the three compounds was achieved by various spectroscopic methods.
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ژورنال
عنوان ژورنال: Zeitschrift für Naturforschung C
سال: 1990
ISSN: 1865-7125,0939-5075
DOI: 10.1515/znc-1990-11-1201