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Updated: Jun 29, 2026
High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
[Studies on chemical constituents from stem bark of Trewia nudiflora]
Shao-Hua Wu1, Yue-Mao Shen, You-Wei Chen
1Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, China. shwu123@126.com
Objective:
To study the chemical constituents from the stem bark of Trewia nudiflora.
Method:
The chemical constituents were isolated by silica gel and sephadex LH - 20 column chromatography, and the structures were elucidated by means of spectral analysis.
Result:
Ten compounds were obtained from EtOAc fraction of EtOH extract and identified as stigmast-4-en-6beta-ol-3-one (1), stigmast-4-en-6alpha-ol-3-one (2), 7beta-hydroxysitosterol (3), 7alpha-hydroxysitosterol (4), schleicheol 2 (5), taraxerone (6), abbeokutone (7), beta-hydroxypropiovanillone (8), o-vanillyl alcohol (9), glycerol monopalmitate (10).
Conclusion:
Compounds 1-5 and 7-9 were isolated from this plant for the first time.