Related Experiment Video
Updated: Jun 23, 2026

Elucidating β-1,3-Glucanase and Peroxidase Physicochemical Properties of Wheat Cell Wall Defense Mechanism Against Diuraphis noxia Infestation
Published on: July 26, 2024
[Alpha-glucosidase inhibitors from Luculia pinciana]
Wenyi Kang1, Li Zhang, Yanli Song
1Institute of Natural Products, Henan University, Kaifeng 475004, China. kangweny@hotmail.com
Objective:
To search alpha-glucosidase inhibitors from Luculia pinciana.
Method:
The alpha-glucosidase inhibitor was isolated by the column chromatographic techniques and the bioassay-guided method in vitro. A combination of MS and NMR spectroscopy was used to identify the chemical structures. The inhibitory kinetic of the isolations was also investigated.
Result:
The ethyl acetate extract showed strongest inhibitory activity, and five active compounds were isolated and identified as scopletin (1), 5-methoxy-8-hydroxycoumarin (2), lalpha,3beta,24-trihydroxyursolic acid (3), ursolic acid (4) and oleanolic acid (5). The IC50 values of all compounds were lower than that of acarbose. Four of them shown noncompetitive type manner on alpha-glucosidase inhibition except that compound 3 is competitive type manner.
Conclusion:
Compounds 1-4 as the inhibitors of alpha-glucosidase were reported for the first time.
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