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Updated: Apr 20, 2026

Preparation of Gynura bicolor DC samples for High-Resolution Tandem Mass Spectrometry
Published on: February 2, 2024
[Chemical constituents from Pholidota cantonensis]
Objective:
To isolate and elucidate the constituents from whole plant of Pholidota cantonensis.
Methods:
The constituents were isolated and purified by silica gel, Sephadex LH-20 and MCI gel chromatography and recrystallization. The structures were elucida- ted on the basis of the chemical evidence and spectroscopic data.
Results:
Ten compounds were obtained : batatasin ll(1), orchinol(2), ephmeranthoquinone(3 ), densiflorol B (4) , 3, 5-dimethoxy-4-hydroxy-propiophenone (5) , cinnamic acid (6) , syringaresinol (7) ,24- methylenencycoartanol( 8),ergosterol peroxide(9) and β-sitosterol( 10).
Conclusion:
Compounds 6 and 9 are isolated from Pholidota genus for the first time,and compounds 4,5 and 7 are isolated from this plant for the first time.
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