Abstract
The phytochemical investigation of the aerial parts of Gynostemma pentaphyllum led to the isolation of a new flavonol glycoside, gynopentaphylloside (1), along with seven known compounds (2–8). The structure of the new compound was determined on the basis of 1D, 2D NMR and HRESIMS data as well as acid hydrolysis. The antioxidant activity of the isolates was evaluated by a 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging assay.
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Acknowledgments
This research was financially supported by the Ministry of Trade, Industry & Energy (MOTIE) and Korea Institute for Advancement of Technology (KIAT) through the Inter-ER Cooperation Projects (R0002021). The authors acknowledge the Korea Basic Science Institute for the NMR measurements.
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Hari Jang and Jin Woo Lee contributed equally to this work.
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Jang, H., Lee, J.W., Lee, C. et al. Flavonol glycosides from the aerial parts of Gynostemma pentaphyllum and their antioxidant activity. Arch. Pharm. Res. 39, 1232–1236 (2016). https://doi.org/10.1007/s12272-016-0793-x
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DOI: https://doi.org/10.1007/s12272-016-0793-x