flavonoid 7-O-β-D-glycosidesphase transfer catalysisglycosidationsynthesisSix flavonoid 7-0-3-D-glycosides 1a-3a and lb-3b were synthesised from the flavones 7a and 7b by glycosidation anddeacetylation with the corresponding a-acetylglycosyl bromides. 7a and 7b were prepared in high yield by...
Flavonol glycosides, which are often converted from aglycones in a process catalyzed by UDP-glycosyltransferases (UGTs), play an important role for the health of plants and animals. In the present study, a gene encoding a flavonoid 7-O-glycosyltransferase (CsUGT75L12) was identified in tea ...
Results Five flavonoid glycosides and one essential oil were isolated and identified as: potengriffioside A(Ⅰ),quercetin-3-O-α-L-rhamnoside(Ⅱ),quercetin-3-O-β-D-glucoside(Ⅲ),kaempferol-3-O-β-D-glucoside(Ⅳ),isorhamnetin-3-O-β-D-glucopyranosyl-7-O-α-L-rhamnopyranoside(Ⅴ),and ...
1973. Flavonoid glycosides from illuminated cell suspension cultures of Petroselinum hortense . Phytochemistry 22 : 1149–1152.Krewzaler F, Hahlbrock K (1976) Flavonoid glycosides from illuminated cell suspension cultures of Petroselinum hortense . Phytochemistry 12:1149–1152...
In flavonoid O-glycosides, substitution with a sugar occurs mainly at C-3 (in C-ring), C-5, or C-7. The sugar moiety may be a mono-, bi-, or trisaccharide. The monosaccharides are usually d-glucose, d-galactose, d-glucuronic, or d-galactouronic acid, or pentoses. d-Apiose, Ll...
An overview of flavonoid glycoside synthesis has been provided with an emphasis on the construction of the glycosidic linkages.1 Introduction2 Synthetic Tactics3 Synthesis of Flavonoid O-Glycosides3.1 Glycosylation with Glycosyl Bromides3.2 Glycosylation with Glycosyl Imidates3.3 Glycosylation with Glycosyl ...
Two flavonol O-glycosides identified as the 3-O-α-arabinopyranosyl(1→6″)-β-glucopyranoside 7-O-β-glucopyranosides of kaempferol and quercetin were isolated from the whole plant of Corydalis bungeana Turcz. together with eight known flavonol O-glycosides. Two isoquinolinone alkaloids were also...
In addition to provide high quality of edible oils and proteins, peanut seeds contain a rich source of flavonoid glycosides that benefit human health. However, information of UGT gene family was quite limited in peanut. Results In present study, a total of 267 AhUGTs clustered into 15 ...
In flavonoid-O-glycosides, substitution with a sugar occurs mainly at C-3 (in C-ring), C-5, or C-7. The sugar moiety may be a mono-, bi-, or trisaccharide. The monosaccharides are usually d-glucose, d-galactose, d-glucuronic, or d-galactouronic acid, or pentoses. d-Apiose, ...
6c and Supplementary Table 7). The motif structure of the mutant was larger than that of WT, which may be critical for the sugar donor selectivity towards UDP-Api. Interestingly, GuApiGT could not accept free flavonoids or 3-O-glycosides, which could be interpreted by molecular docking and ...