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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 of Dioscorea opposita]
Bing Bai1, Ming-Jing Li, Yong Wang
1Henan University, Key Lab of Natural Drug and Immune Engineering of Henan Province, College of Chemistry and Chemical Engineering, Kaifeng 475001, China.
Objective:
To study the chemical constituents of Dioscorea opposita.
Method:
The chemical constituents were isolated and purified by silica gel column chromatography, and the structures were elucidated by their spectroscopic data and physico-chemical properties.
Result:
Twelve compounds were obtained and identified as palmitic acid (1), beta-sitosterol (2), oleic acid (3), beta-sitosterol acetate (4), 5-(hydroxymethyl)furfural (5), nonanedioic acid (6), beta-daucosterol (7), cyclo-(Phe-Tyr) (8), cyclo-(Tyr-Tyr) (9), 6-methyl citrate (10), 1, 5-dimethyl citrate (11), trimethyl citrate (12).
Conclusion:
Compounds 3-12 were isolated from this plant for the first time and cyclodipeptides were firstly isolated from the Dioscoreae family; Compound 9 was a new natural product.
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