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Updated: May 11, 2026
High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
[Study on the chemical constituents of Lonicera similes]
Guang-Ya Zheng1, Yu-Ying Ma, Xiang-Rong Mu
1College of pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China. 412212711@qq.com
Objective:
To study the chemical constituents of flower buds of Lonicera similes.
Methods:
The chemical constituents were isolated and purified with macroporous resin, silica gel column chromatography, gel chromatography, ect. The structures were elucidated according to the references combined with the application of spectrum techniques such as 1H-NMR, 13C-NMR ect.
Results:
Nine compounds were isolated and their structures were identified as 5-hydroxyl-7,4'-dimethoxyflavone (I), rutin (II), quercetin (III), amentoflavone (IV), aesculetin (V), beta-sitosterol (VI), 5-hydroxyl-7,3', 4'-trimethoxyflavone (VIII), oleanolic acid (VIII), beta-daucosterin (IX).
Conclusion:
Among the nine isolated compounds, compounds I, II, III, IV, V, are flavonoids. Compounds I , IV, V, VII, VIII, IX are isolated from this plant for the first time.
