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Updated: Aug 25, 2026

High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
[Chemical constituents of Ligularia dictyoneura]
Ai-min Tan1, Hong-ping He, Hong Yang
1Department of Pharmacognosy, China Pharmaceutical University, Nanjing 210038, China.
Aim:
To study the chemical constituents of Ligularia dictyoneura.
Methods:
Various chromatographic techniques were used to separate and purify the compounds. Their spectral data (MS, IR, NMR) were measured for structure elucidation.
Results:
Four sesquiterpenes were isolated from Ligularia dictyoneura and their structures were identified as ligudicin A (1), ligudicin C (2), ligudicin D (3) and isopetasin (4).
Conclusion:
Compound 1 is a new compound, compound 2 is a new natural product, and compounds 3 and 4 are obtained from Ligularia dictyoneura for the first time.
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