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Updated: Jun 15, 2026

High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
[Chemical constituents from Aeschynanthus longicaullis]
1Institute of Natural Products, Pharmaceutical College, Henan University, Kaifeng 475004, China.
Objective:
To study the chemical constituents from Aeschynanthus longicaullis.
Method:
The column chromatographic techniques were applied to isolate the constituents. The spectroscopie methods were used of EI-MS and NMR to identify the structures of the separated compounds.
Result:
Seven compounds were isolated from the ethyl acetate extract of A. longicaullis, whose structures were elucidated as cryptomeridiol (1), 4 (15) -eudesmene-1beta, 6alpha-diol (2), 2,5-bornanediol (3), isovanillic acid (4), vanillic acid (5), stigmast-5 (6) , 22 (23)-diene-3beta-ol (6) and beta-sitosterol (7).
Conclusion:
Compounds 1-5 were isolated for the first time from Gesneriaceae and 6-7 were isolated for the first time from this plant.
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