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Updated: Jun 22, 2026
High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
[Studies on chemical constituents of Uvaria tonkinensis var. subglabra]
An Liu1, Lizhen Xu, Zhongmei Zou
1Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China. la62@163.com
Objective:
To isolate and identify chemical constituents of Uvaria tonkinensis var. subglabra.
Method:
The column chromatographic techniques were applied to isolate constituents, and their structures were elucidated by means of spectral data analysis including 1D and 2D NMR, IR and MS techniques.
Result:
Seven compounds were isolated and identified as subglain C (1), beta-senepoxide (2) , 2, 4-dioxohexahydro-1, 3-diazepin (3), kaempferol-3, 7-di-O-alpha-L-rhamnoside (4), anolobine (5), (-)-lyoniresinol (6) and schizandriside (7).
Conclusion:
Compound 1 was the new natural product; compounds 2-7 were isolated for the first time from U. tonkinensis var. subglabra.
