Chemical constituents of tannin from roots of Rheum palmatum
10.7501/j.issn.0253-2670.2020.04.013
- Author:
Rui-Xue DENG
1
Author Information
1. Luoyang Key Laboratory of Natural Products Functional Factor Research and Development, College of Chemical Engineering & Pharmaceutical, Henan University of Science and Technology
- Publication Type:Journal Article
- Keywords:
2-O-cinnamoyl-1-O-galloyl-β-D-glucopyranoside;
6-O-cinnamoyl-1-O-galloyl- β-D-glucopyranoside;
Palmatoside;
Rheum palmatum L.;
Tannins
- From:
Chinese Traditional and Herbal Drugs
2020;51(4):908-911
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To study the chemical constituents of tannin from the roots of Rheum palmatum. Methods: Chemical constituents of tannins were isolated by silica gel column chromatography, medium pressure column chromatography, and semi-preparative HPLC from the roots of R. palmatum. The structures were elucidated on the basis of spectral data analysis. Results: Four tannins, 3-O-cinnamoyl-1-O-galloyl-β-D-glucopyranoside (1), 2-O-cinnamoyl-1-O-galloyl-β-D-glucopyranoside (2), 2-O-cinnamoyl-1,6-di-O-galloyl-β-D-glucopyranoside (3), and 6-O-cinnamoyl-1-O-galloyl-β-D-glucopyranoside (4) were isolated from the roots of R. palmatum. Conclusion: Compound 1 is a new compound named palmatoside.