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Updated: May 27, 2026
High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
[Study on the chemical constituents of Pithecellobium clypearia]
1The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510665, China.
Objective:
To study the chemical constituents of Pithecellobium clypearia.
Methods:
Silica gel column chromatography and Sephadex LH-20 were used to separate and purify compounds from the EtOAc soluble fraction of Pithecellobium clypearia. 9 compounds were elucidated on the basis of physicochemical properties and spectrascopic analysis.
Results:
They were identified as beta-Sitosterol (1), tritriacontane (2), 5-hydroxy-3,7,3',4'-tetramethoxyflavone (3), oleanolic acid (4), 5,4'-dihydroxy-3,7,3'-trimethoxyflavone (5), alpha-amyrin (6), luteolin (7), ursolic acid (8), luteoloside (9).
Conclusion:
Compounds 3 and 5 are isolated from this plant for the first time.
