[Chemical constituents of ethyl acetate fraction from Aeschynanthus bracteatus]
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Updated: May 8, 2026
High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
1Yiyang Medical College, Yiyang 413000, China. 717204786@qq.com
Objective:
To study the constituents of EtOAc extract from Aeschynanthus bracteatus.
Methods:
The constituents were isolated and purified by chromatography on silica gel and the structures of the compounds were determined by MS and NMR spectral analysis.
Results:
On the basis of spectroscopic analysis and comparison with the reported data, compounds were identified as koaburaside (1), coniferaldehyde (2), syringaldehyde (3), sinapinaldehyde (4), 2,4'-dihydroxyacetophenone (5), piceol (6), beta-daucosterol (7), beta-sitosterol (8).
Conclusion:
Compounds 1 and 2 are obtained from this genus for the first time.
