Abstract
Six undescribed withanolides were isolated and characterized during the investigation of anti-inflammatory and cytotoxic constituents from the whole plants of Physalis minima L. Their structures were elucidated by extensive spectroscopic analyses (IR, UV, HR-ESI-MS, 1D-NMR, and 2D-NMR), and their anti-inflammatory and cytotoxic activities were evaluated in vitro. All the compounds exhibited anti-inflammatory ability via inhibiting the production of nitric oxide (NO) in lipopolysaccharide (LPS)-stimulated murine macrophage RAW 264.7 cells. Moderate cytotoxic activities against A549 lung adenocarcinoma cells, SMMC-7721 hepatic carcinoma cells and MCF-7 breast cancer cells with IC50 values in the range of 40.01–82.17 μM were observed for these withanolides.
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