Related Experiment Video
Updated: Jun 1, 2026
High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
[Chemical constituents in herb of Polygonum orientale II]
Yongjun Li1, Cuibing Li, Xun He
1School of Pharmacy, Guiyang Medical College, Guiyang 550004, China. liyongjun026@126.com
Objective:
To study the chemical constituents of the essential substance from the 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:
Seven compounds were obtained and identified as ombuine-3-O-beta-D-galactopyranoside (1), ombuine-3-O-rutinoside (2), tryptophan (3), quercetin-3-O-methyl ether (4), kaempferol-3-O-(2"-O-alpha-L-rhamnopyranosyl) -beta-D-glucuronopyranoside (5), quercetin-3-O-(2"-O-alpha-L-rhamnopyranosyl)-beta-D-glucuronopyranoside (6), quercetin-3-O-beta-D-glucuronide (7).
Conclusion:
Compounds 4-7 were isolated from P. oriental for the first time and compounds 1-3 were firstly obtained from the genus Polygonum. The total 1H and 13C-NMR date of compound 1 were assigned for first time.