Taxonomic group: plant / Streptophyta
(Phylum: Streptophyta)
NCBI PubMed ID: 10746883Publication DOI: 10.1016/s0031-9422(99)00598-1Journal NLM ID: 0151434Publisher: Elsevier
Correspondence: nawwar
worldnet.com.eg
Institutions: National Research Centre, Cairo, Egypt, Department of Chemistry, Zagazig University, Zagazig, Egypt, Institut Fur Pharmazeutische Biologie, Albert-Ludwigs Universitat, Freiburg, Germany, National Research Centre, Department of Phytochemistry, Pharmacutical Sciences Division, Cairo, Egypt
The whole plant of Cotoneaster orbicularis contains the novel di-C-glycosylflavone, 4",4"'-di-O-β-glucopyranosyl-vicenin II, or 6,8-di-C-β-Cellobiosylapigenin, as well as the hitherto unknown natural phenolic glucoside, gentisic acid 2-O-β-glucopyranoside, or orbicularin. Further phenolics are protocatechuic, anisic, caffeic, p-coumaric acids, catechin, epicatechin, 2"-O-α-rhamnopyranosylvitexin, vitexin, rutin, isoquercetrin, hyperin and naringenin. All structures were determined by routine methods of analysis and confirmed mostly by 1H- and 13C-NMR.
NMR, ESI-MS, 6, rosaceae, whole plant, Cotoneaster orbicularis, C-glycosylЇavones, 8-di-C-cellobiosylapigenin, phenolic acid-O-glucoside, gentisic acid, 2-O-glucopyranoside, orbicularin
Structure type: monomer
Trivial name: isoquercitrin
Compound class: saponin glycoside, glycoside, flavonoid glycoside, flavonol glycoside, flavone glycoside
Contained glycoepitopes: IEDB_142488,IEDB_146664,IEDB_983931,SB_192
Methods: 13C NMR, 1H NMR, ESI-MS, acid hydrolysis, paper chromatography, UV, extraction, EI-MS, column chromatography, precipitation, evaporation
Related record ID(s): 65391, 65392, 65393, 65394, 65395, 65397
NCBI Taxonomy refs (TaxIDs): 1851000Reference(s) to other database(s): CCSD:
49965, CBank-STR:953
Show glycosyltransferases
There is only one chemically distinct structure:
Found 
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