Identification and characterization of three new flavonoids from Rhododendron dauricum / 中国天然药物
Chinese Journal of Natural Medicines (English Ed.)
; (6): 628-633, 2015.
Article
em En
| WPRIM
| ID: wpr-812502
Biblioteca responsável:
WPRO
ABSTRACT
The present study was designed to determine the major chemical constituents of the leaves of Rhododendron dauricum L. Compounds were isolated and purified by various chromatographic methods, and their structures were elucidated by physicochemical properties and spectral data. The present study identified two new C-methyl flavanones, 5, 7, 3', 5'-tetrahydroxy-6, 8-di-C-methyl flavanone (1) and 5, 4'-dihydroxy-8-C-methylflavanone-7-O-β-D-glucopyranoside (2), and one new flavonoid glycoside, quercetin-3-O-β-D-(6"-O-cinnamoyl)-galactoside (3), along with seven known compounds, including syzalterin (4), poriolin (5), farrerol-7-O-β-D-glucopyranoside (6), myrciacetin (7), quercetin-3-O-β-D-(6-p-hydroxy-benzoyl)-galactoside (8), quercetin-3-O-β-D-(6-p-coumaroyl)-galactoside (9), and 5, 7, 3', 5'-tetrahydroxyl flavanone (10). Compounds 1-3 were determined to be new flavonoids; compounds 4-6 were isolated from this species for the first time; and compounds 7-10 were reported for the first time from this genus.
Palavras-chave
Texto completo:
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Base de dados:
WPRIM
Assunto principal:
Quercetina
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Flavonoides
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Extratos Vegetais
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Estrutura Molecular
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Química
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Folhas de Planta
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Rhododendron
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Flavanonas
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Galactosídeos
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Glucosídeos
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
Chinese Journal of Natural Medicines (English Ed.)
Ano de publicação:
2015
Tipo de documento:
Article