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Abstract
Using various chromatographic separations, four compounds, including one new steroid saponin named vernoamyoside E (1), were isolated from the leaves of the Vietnamese medicinal plant Vernonia amygdalina Delile (Asteraceae). Their structures were established by spectroscopic methods such as 1D- and 2D-NMR, HR-ESI-MS, and HPLC analysis. The inhibitory activities against α-glucosidase and α-amylase of the isolated compounds from V. amygdalina were reported for the first time. The results indicated that compound 1 significantly inhibited both against α-amylase and α-glucosidase activity.
Graphical Abstract
![Graphical abstract]({"type":"image","src":"/na101/home/literatum/publisher/tandf/journals/content/gnpl20/2021/gnpl20.v035.i05/14786419.2019.1607853/20210217/images/medium/gnpl_a_1607853_uf0001_c.jpg"})
Conflict of interest
The authors have declared that there is no conflict of interest.
Correction Statement
This article has been republished with minor changes. These changes do not impact the academic content of the article.