Related Experiment Video
Updated: May 20, 2026

High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
[Chemical constituents of Berchemia lineate]
Xiao-jun Zeng1, Ying Hu, Xiao-qiong Wen
1Jinan University, Department of Chemistry, College of Life Science and Technology, China. junezengjnu@126.com
Objective:
To investigate the chemical constituents of the roots of Berchemia lineate as a medicinal plant of Yao nationality in China.
Methods:
Compounds were isolated by various column chromatography and elucidated by physicochemical and spectral analysis.
Results:
Nine compounds were isolated from the 95% ethanol extract of the roots of Berchemia lineate and their structures were identified as palmitic acid (1), octadecanoic acid (2), beta-sitosterol (3), stigmasterol (4), fernenol (5), chrysophanol (6), physcion (7), floribundiquinone D (8), 2-acetylphyscion(9) respectively.
Conclusion:
Compounds 1-4,7-9 are isolated from this plant for the first time,and compounds land 2 are firstly isolated from this genus.
Related Concept Videos
Aromatic Compounds: Overview
In 1825, Faraday isolated benzene...
Nomenclature of Aromatic Compounds with a Single Substituent
Benzene to 1,4-Cyclohexadiene: Birch Reduction Mechanism
NMR Spectroscopy of Benzene Derivatives
Five-Membered Heterocyclic Aromatic Compounds: Overview
Nomenclature of Aromatic Compounds with Multiple Substituents
For disubstituted benzene derivatives, with two groups attached to the benzene ring, three constitutional isomers are possible. For example, consider dimethyl benzene, often called xylene, where the second methyl group can be substituted at the second, third, or fourth carbon. The relative position of the substituents is represented by prefixes ortho, meta, or...