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Updated: Aug 9, 2026

High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
[A new dicoumarin from stem bark of Wikstroemia indica]
Li-dong Geng1, Cun Zhang, Yong-qing Xiao
1Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing.
Objective:
To study the chemical constituents form stem bark of Wikstroemia indica.
Method:
The constituents were isolated by column chromatography on silica gel and ODS, and identified by spectroscopic methods.
Result:
Seven compounds, daphnoretin (I), tricin (II), daucosterol (III), beta-sitosterol (IV), umbelliferone (V), genkwanin (VI), and 6'-hydroxy, 7-O-7'-dicoumarin (VII), were isolated and identified.
Conclusion:
Compound VII was a new compound and compounds III, V were isolated from this plant for the first time.