Nguyen Duy Thanh , Ton Nu Lien Huong * , Nguyen Hoang Phuong , Nguyen Dinh Cung Tien , Ly Anh Van and Nguyen Thi Thu Suong

* Correspondence: Ton Nu Lien Huong (email:

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This work describes the isolation and characterization of 3 compounds, including physalin B (1), physalin G (2) and quercetin 3-O-rutinoside (3) from the dichloromethane and n-butanol extracts of the aerial parts of the medicinal species Physalis angulata L. collected from Dong Thap province. The chemical structures were elucidated based on various spectra data (ESI-MS, 1D- and 2D-NMR spectroscopy) and by comparing with known spectral data. For the frist time, the inhibition activity of physalin G on α-glucosidase enzyme was announced.
Keywords: Physalis angulata L., physalin B, physalin G, quercetin 3-O-rutinoside, inhibition on the α-glucosidase enzyme.

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