[Isolation and structure identification of chemical constituents from Polygala hongkongensis II].
OBJECTIVE
To isolate and elucidate the constituents of herbs of Polygala hongkongensis.


METHODS
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.


RESULTS
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).


CONCLUSIONS
The known compounds 1-6 were isolated from this plant for the first time.
Wu
Jian-Feng
JF
Shenyang Pharmaceutical University, Shenyang 110016, China.
Chen
Si-Bao
SB
Wu
Li-Jun
LJ
Chen
Shi-Lin
SL
Tu
Peng-Fei
PF
D002850:Chromatography, Gel; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D062385:Hydroxybenzoates / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D010226:Parabens / Q000737:chemistry / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*; D031801:Polygala / Q000737:chemistry*; D044004:Xanthones / Q000737:chemistry / Q000302:isolation & purification*
D062385:Hydroxybenzoates; D010226:Parabens; D044004:Xanthones; C009091:protocatechuic acid; C404221:euxanthone; C038193:4-hydroxybenzoic acid