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Antioxidative Constituents from the Leaves of Hypericum styphelioides
- Source :
- Journal of Natural Products; May 2004, Vol. 67 Issue: 5 p869-871, 3p
- Publication Year :
- 2004
-
Abstract
- Two new compounds have been isolated from the leaves of Hypericum styphelioides. Their structures have been established on the basis of mass spectrometry and 2D NMR techniques as 1,3,5-trihydroxy-2-(2,2-dimethyl-4-isopropenyl)cyclopentanylxanthone (<BO>1</BO>) and 3,5-dihydroxybenzophenon-4-β-<SCP>d</SCP>-glucoside (<BO>2</BO>). Known compounds 5-O-demethylpaxanthonin (<BO>3</BO>) and 3-geranyl-1-(3-methylbutanoyl)phloroglucinol (<BO>4</BO>) were also isolated and characterized. Compounds <BO>1</BO>−<BO>4</BO> were evaluated for their antioxidative properties in Trolox equivalent antioxidant activity (TEAC) and chemiluminescence (CL) assays.
Details
- Language :
- English
- ISSN :
- 01633864 and 15206025
- Volume :
- 67
- Issue :
- 5
- Database :
- Supplemental Index
- Journal :
- Journal of Natural Products
- Publication Type :
- Periodical
- Accession number :
- ejs6053983