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Updated: Jun 17, 2026

High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
[Chemical constituents of flowers from Polygonum orientale]
Yongjun Li1, Xun He, Zhibao Liu
1School of Pharmacy, Guiyang Medical College, Guiyang, China. liyongjun026@126.com
Objective:
To study the chemical constituents in the active portion from the flowers of Polygonum oriental.
Method:
Chromatographic techniques were employed for isolation and purification of the constituents and their structures were determined by spectral analysis and chemical evidence.
Result:
Nine compounds were obtained and identified as alphitonin (1), methyl 3, 4-dihydroxybenzoate (2), apocynin (3), kaempferol-3-O-beta-D-glucoside (4), 1,3,5-trihydroxybenzene (5), 3,3'-dimethoxyellagic-acid-4-O-beta-D-glucoside (6), kaempferol-3-O-alpha-L-rhamnoside (7), quercetin-3-O-alpha-L-rhamnoside (8), kaempferol (9).
Conclusion:
Compounds 2, 4, 5 were isolated from P. oriental for the first time and compounds 1, 3 were firstly obtained from the genus Polygonum.
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