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Updated: May 11, 2026

Preparation of Hard Palm Seeds for Matrix-Assisted Laser Desorption/Ionization-Imaging Mass Spectrometry Analysis
Published on: June 30, 2023
[Chemical constitunents of seeds of Oroxylum indicum]
Xiao-Nan Wei1, Bin-Bin Lin, Guo-Yong Xie
1Department of Resources Science of Traditional Chinese Medicines, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China.
Objective:
To study the chemical constituents in the seeds of Oroxylum indicum.
Method:
Twenty compounds were isolated and purified by silica gel, and Sephadex LH-20 column chromatography, and their structures were determined by spectroscopic analysis including NMR and MS.
Result:
Twenty compounds were isolated and identified as oroxin A (1), oroxin B (2), chrysin (3), baicalein (4), quercetin (5), apigenin (6), kaempferol (7), quercetin-3-O-ara-binopyranoside (8), lupeol C9), lup-20 (29)-ene-2alpha,3beta-diol (10), pinosylvin (11), dihydropinosylvin (12), cholest-5-ene-3, 7-diol (13), rengyol (14), isorengyol (15), zarzissine (16), (E) -pinosylvin-3-O-beta-D-glucopyranoside (17), adenosine (18), sitosterol (19) and daucosterol (20).
Conclusion:
Compounds 11-13 and 15-18 were obtained from the genus Oroxylum for the first time, and except compound 18, the remaining 6 compounds were obtained from the family Bignoniaceae for the first time.
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