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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 chemical constituents of Ixeris chinensis]
Qi-Shi-San Wu1, Qing-Hu Wang, Yin-Tai Na
1College of Traditional Mongolian Medicine, Inner Mongolia University for Nationalities, Tongliao 028000, China. qishanwu@126.com
Objective:
To study the chemical constituents of Ixeris chinensis.
Methods:
The chemical constituents of Ixeris chinensia were isolated and purified by silica gel. LH-20 column chromatography and preparation HPLC etc. Their structures were identified b) means of spectra, in same cases by direct comparison with authentic samples.
Results:
Ten compounds were obtained and identified as luteolin (1), luteolin-7-O-beta-D-glucopyranoside (2), apigenin-7-O-beta-D-glucopyrano side (3), luteolin-7-O-beta-D-glucopyranoside acatate (4), 3beta-(beta-D-glucopyranosyloxy) -8beta- (p-hydroxyphenylacetyloxy) -guaia-4 (15), 10 (14), 11 (13) -trien-1alpha, 5beta, 6beta, 7alphaH-12, 6-olide (5), beta- (beta-D-glucopyranosyloxy) -8beta- (2-hydroxy-3-methylbutanoyloxy) -guaia-4 (15),10 (14), 11 (13) -trien-1alpha, 5beta, 6beta,7alphaH-12,6-olide (6), 5, 3', 4'-trihydroxy-7-methoxyflavone (7), apigenin (8), 5-hydroxy-7,4'- dimethoxyflavone (9), 5, 7, 4'- trimethoxyflavone (10).
Conclusion:
Compounds (5, 6, 7, 9, 10) are isolated from this plant for the first time.