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Updated: Aug 13, 2026

High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
[Study on the chemical constituents in herb of Hypericum attenuatum]
Jian-yong Dong1, Zhong-jian Jia
1Department of Pharmacology, Wenzhou Medical College, Wenzhou 325035, China. jianyd163@163.com
Objective:
To study the constituents of Hypericum attenatum.
Method:
The compounds were isolated by chromatography on silica gel, the structures were identified by their physical, chemical properties and IR, NMR and MS spectral data respectively.
Result:
Nine compounds were isolated and identified as p-hydroxybenzoic acid (1), 6, 9-dihydroxy-4, 7-megastigmadien-3-one (2), butyl alcohol-O-alpha-D-fructoside (3), 24-ethyl-cholest-7-ene-3 beta, 5 alpha, 6 beta-thtroil (4), hexanol (5), 1 beta, 6 alpha-dihydroxyeudesmane-4(14)-ene (6), beta-sitosterol (7), 5, 5-dimethyl-4-hydroxy-tetrahydrofuran-2-one (8), beta-daucosterol (9).
Conclusion:
All of the compounds were isolated from H. attenuatum for the first time.
