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[Chemical constituents in herbs of Polygonum jucundum]
Yun Lin1, Chaofeng Zhang, Mian Zhang
1Department of Phamacognosy, China Pharmaceutical University, Nanjing 210038, China.
Objective:
To investigate the chemical constituents in herbs of Polygonum jucundum.
Method:
The 85% ethanol extract was separated by means of silica gel and Sephadex LH-20 column chromatography. The compounds isolated from the plant were identified by physicochemical properties and spectroscopic evidence.
Result:
Eight compounds were isolated and identified as: quercetin-3'-O-beta-D-galactoside (1), 8-methoxyquercetin (2), pigenin (3), luteolin (4), quercetin (5), 3,5,7-trihydroxychromone (6), p-hydroxybenzaldehyde (7), beta-sitosterol (8).
Conclusion:
All compounds were isolated from this plant for the first time, compounds 5- 8 were isolated from the genus Polygonum for the first time.