euxanthone has been researched along with protocatechuic-acid* in 1 studies
1 other study(ies) available for euxanthone and protocatechuic-acid
| Article | Year |
|---|---|
[Isolation and structure identification of chemical constituents from Polygala hongkongensis II].
To isolate and elucidate the constituents of herbs of Polygala hongkongensis.. The constituents were isolated and purify by chromatographic on silica gel, Sephadax LH-20 and semi-preparative HPLC. The structures were determined by NMR and MS spectral analysis.. Six compounds were identified as euxanthone (1), 1, 3, 6-trihydroxyxanthone (2), 1, 4, 7-trihydroxy-3-methoxy-xanthone (3), p-hydroxybenzoic acid (4), 3, 4-dihydroxybenzoic acid (5), and methy 1 2, 5-dihydroxybenzoate (6).. The known compounds 1-6 were isolated from this plant for the first time. Topics: Chromatography, Gel; Chromatography, High Pressure Liquid; Hydroxybenzoates; Magnetic Resonance Spectroscopy; Mass Spectrometry; Parabens; Plants, Medicinal; Polygala; Xanthones | 2007 |