Related Experiment Video
Updated: May 15, 2026

High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
Phenols and flavonoids from the aerial part of Euphorbia hirta
1Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China.
Aim:
To investigate the chemical constituents of the aerial part of Euphorbia hirta Linn.
Methods:
The chemical constituents were isolated and purified by various chromatographic techniques, and their structures were elucidated on the basis of spectroscopic analysis.
Results:
Nine compounds were isolated and identified as scopoletin (1), scoparone (2), isoscopoletin (3), quercetin (4), isorhamnetin (5), pinocembrin (6), kaempferol (7), luteolin (8), gallic acid (9).
Conclusion:
Among them compounds 1-3, 5-8 were found from this plant for the first time.
Related Concept Videos
Aromatic Compounds: Overview
In 1825, Faraday isolated benzene...
Crown Ethers
NMR Spectroscopy of Aromatic Compounds
Benzene to Phenol via Cumene: Hock Process
Oxidation of Phenols to Quinones
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox property is crucial in...
Structure and Nomenclature of Alcohols and Phenols
Alcohols are one of the most important functional groups in organic chemistry. The name of alcohol comes from the hydrocarbon from which it is derived. Alcohols are organic molecules containing the functional hydroxyl or –OH group directly bonded to carbon. Phenols have an OH group directly attached to a benzene ring. While alcohols are colorless, phenol is a white crystalline compound with a characteristic "hospital smell" odor.
As with other organic compounds, alcohols and phenols...
