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Updated: Aug 13, 2026

High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
[Chemical constituents from Elsholtzia blanda]
Hai-yong Chen1, Chang-xin Zhou, Yi-jia Lou
1College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310031, China.
Objective:
To investigate the constituents of Elsholtzia blanda.
Method:
The chemical components were isolated by polyamide and silica gel column chromatography. Their structures were identified with extensive spectral (EI-MS, ESI-MS, 1H-NMR, 13C-NMR, DEPT, 1H-1H-COSY, HMBC, HMQC) and chemical methods.
Result:
Five compounds were isolated and identified as luteolin (I), luteolin-5-O-beta-D-glucopyranoside (II), luteolin-7-O-beta-D-glucopyranoside (III), 5-hydroxy-7, 8 -dimethoxyflavone (IV) and 5-hydroxy-6, 7-dimethoxyflavone (V).
Conclusion:
Compounds III, IV, V were isolated from E. blanda for the first time and I was firstly separated from the genus Elsholtzia.
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