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Chemical constituents of Jasminum giraldii and their antioxidant activity / 中国中药杂志
China Journal of Chinese Materia Medica ; (24): 2029-2033, 2014.
Artigo em Chinês | WPRIM | ID: wpr-299837
ABSTRACT
Ten compounds were isolated from the barks of Jasminum giraldii by means of various of chromatographic techniques such as silica gel, Sephadex LH-20 and Rp-HPLC. Their structures were identified by spectroscopic data analysis as (+)-medioresinol (1), (+) -syringaresinol (2), syringaresinol-4'-O-beta-D-glucopyranoside (3), oleanic acid (4), 3-methoxy-4-hydroxy-trans-cinnamaldehyde (5), trans-sinapaldehyde (6), syringaldehyde (7), 1-(4-methoxy -phenyl) -ethanol (8), trans-cinnamic acid (9), and 4-(1-methoxyethyl) -phenol (10). Among them, compounds 1-3, 5-8 and 10 were isolated from the J. genus for the first time and compounds 4 and 9 were obtained from J. giraldii for the first time. In the DPPH free radical scavenging assay, compound 1 exhibited significant activity (IC50 55.1 micromol x L(-1)), compared with vitamin C(IC50 59.9 micromol x L(-1)); and compound 2 showed moderate activity (IC50 79.0 micromol x L(-1)), compared with 2, 6-di-tert-butyl4-methylphenol (IC50 236 micromol x L(-1)).
Assuntos
Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Medicamentos de Ervas Chinesas / Espectroscopia de Ressonância Magnética / Estrutura Molecular / Química / Espectrometria de Massas por Ionização por Electrospray / Jasminum / Antioxidantes Idioma: Chinês Revista: China Journal of Chinese Materia Medica Ano de publicação: 2014 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Medicamentos de Ervas Chinesas / Espectroscopia de Ressonância Magnética / Estrutura Molecular / Química / Espectrometria de Massas por Ionização por Electrospray / Jasminum / Antioxidantes Idioma: Chinês Revista: China Journal of Chinese Materia Medica Ano de publicação: 2014 Tipo de documento: Artigo