RESUMO
OBJECTIVE: To investigate the chemical constituents from the leaves of Cyclocarya paliurus. METHODS: Chemical constituents were isolated and purified by column chromatography with silicagel, Sephadex LH - 20, and semi-preparative HPLC. RESULTS: Eleven compounds were isolated from the ethyl acetate extracts of the leaves of Cyclocarya paliurus. Their structures were elucidated as hirsutrin (1), contigoside B (2), kaempferol (3), sterubin (4), syringic acid (5), vanillic acid (6), 2-hydroxy-5-ethoxybenzoic acid (7), 2-methoxy-4-hydroxycinnamic acid (8), cis-p-hydroxycinnamic acid (9), p-hydroxybenzonic acid (10), and phydroxybenzaldehyde (11). CONCLUSION: All the compounds except 3 and 6 are obtained from Cyclocarya paliurus for the first time.
RESUMO
Objective: To study the chemical constituents from the ethyl acetate and n-butanol extract of Guizhi Fuling Capsule. Methods: The chemical constituents were isolated and purified by multiple chromatographic methods. Their structures were identified on the basis of the spectral data and physicochemical properties. Results: Ten compounds were identified as 4-hydroxybenzoic acid (1), trans-O-methoxy cinnamic acid (2), trans-cinnamic acid (3), 4-hydroxycinnamic acid (4), 2,5-dihydroxy-4-methylacetophenone (5), ethyl gallate (6), vanillic acid (7), protocatechuic acid (8), affinoside (9), and benzyl-β-D-glucopyranosyl-(1→6)-β-D-glucopyranoside (10). Conclusion: Compounds 1-10 are isolated from this plant for the first time.