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[Isolation and structure identification of chemical constituents from Polygala hongkongensis II]
Jian-Feng Wu1, Si-Bao Chen, Li-Jun Wu
1Shenyang Pharmaceutical University, Shenyang 110016, China.
Objective:
To isolate and elucidate the constituents of herbs of Polygala hongkongensis.
Method:
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.
Result:
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).
Conclusion:
The known compounds 1-6 were isolated from this plant for the first time.
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