euxanthone and eriodictyol

euxanthone has been researched along with eriodictyol* in 1 studies

Other Studies

1 other study(ies) available for euxanthone and eriodictyol

ArticleYear
Antioxidative compounds from Garcinia buchananii stem bark.
    Journal of natural products, 2015, Feb-27, Volume: 78, Issue:2

    An aqueous ethanolic extract of the stem bark of Garcinia buchananii showed strong antioxidative activity using H2O2 scavenging, oxygen radical absorbance capacity (ORAC), and Trolox equivalent antioxidant capacity (TEAC) assays. Activity-guided fractionation afforded three new compounds, isomanniflavanone (1), an ent-eriodictyol-(3α→6)-dihydroquercetin-linked biflavanone, 1,5-dimethoxyajacareubin (2), and the depsidone garcinisidone-G (3), and six known compounds, (2″R,3″R)-preussianon, euxanthone, 2-isoprenyl-1,3,5,6-tetrahydroxyxanthone, jacareubin, isogarcinol, and garcinol. All compounds were described for the first time in Garcinia buchananii. The absolute configurations were determined by a combination of NMR, ECD spectroscopy, and polarimetry. These natural products showed high in vitro antioxidative power, especially isomanniflavanone, with an EC50 value of 8.5 μM (H2O2 scavenging), 3.50/4.95 mmol TE/mmol (H/L-TEAC), and 7.54/14.56 mmol TE/mmol (H/L-ORAC).

    Topics: Antioxidants; Biflavonoids; Depsides; Flavanones; Garcinia; Hydrogen Peroxide; Lactones; Molecular Structure; Nuclear Magnetic Resonance, Biomolecular; Plant Bark; Tanzania; Terpenes; Xanthones

2015