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Updated: Jun 26, 2026
High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
[Studies on the constituents from the herba of Erigeron acer]
Ming-Ming Yan1, Da-Qing Zhao, Shuai Shao
1Changchun University of Traditional Chinese Medicine, Changchun 130117, China. yanmm595@yahoo.com.cn
Objective:
To investigate the chemical constituents of the aerial part of Erigeron acer.
Methods:
The chemical constituents were isolated by various columns and thin layer chromatographic methods. The structures were identified by spectral data.
Results:
Five compounds were isolated and identified as alpha-amyrin (1), beta-amyrin (2), caffeic acid (3), quercetin (4), 4'-hydroxywogonin-7-O-beta-D-glucuronic acid glycoside (5).
Conclusion:
The five compounds are obtained from this plant for the first time. The signals of 13C-NMR of the compound(5) are reassigned by means of DEPT, HMQC, HMBC, the signals of 1H-NMR of 2" - 5"-H of the glucuronic acid moiety are assigned by means of HMBC, HMQC, 1H-1H COSY for the first time.