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Updated: Jun 23, 2026
High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
[Studies on chemical constituents of Eleutherine americana]
Xi-jing Liu1, Xi-qing Yan, Nai-li Wang
1Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, China. lxj_1975@yahoo.com.cn
Objective:
To research the chemical constituents from Eleutherine americana.
Methods:
Column chromatography with silica gel was employed to isolate and purify the constituents. Their structures were elucidated by means of MS and NMR.
Results:
Eight constituents were obtained and identified as Isoeleutherol (1), eleutherin (2), isoeleutherin (3), beta-sitosterol(4), 8-hydroxy-3, 4-Dimethoxy-1-methyl-anthra-9, l0-quinone-2-carboxylic acid methyl ester (5), Hongconin (6), 4,8-Dihydroxy-3-Methoxy-1-methyl-anthra-9,10-quinone-2-carboxylic acid methyl ester (7), Eleutherinone (8), Kadsuric acid (9).
Conclusion:
Compound 9 is isolated from the plant for the first time.