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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
[Chemical constituents from the flower of Juglans regia]
Jian-Jun Luo1, Ben Yang, Yong Zeng
1School of Pharmacy, Lanzhou University, Lanzhou 730000, China. luojianjun9@163.com
Objective:
To study the chemical constituents from the flower Juglans regia.
Methods:
All compounds were isolated and purified by normal column chromatograph and polyamide chromatograph, the chemical strucures were mainly elucidated by ESI-MS and NMR spectra.
Results:
Seven compounds were identified as follows: 4,5,8-trihydroxy-alpha-tetralone 5-O-beta-D-glucopyranoside(1),4,5-dihydroxy-alpha-tetralone4-O-beta-D-glucopyranoside(2), 5-hydroxy-4-methoxytetralone (3), 5-hydroxy-1, 4-naphthoquinone (4), rutin (5), vanillin (6), tetracosanoic acid 2,3-dihydroxypropyl ester (7).
Conclusion:
All compounds are isolated from this plant for the first time.
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