New furostanol saponins with anti-inflammatory and cytotoxic activities from the rhizomes of Smilax davidiana

- Seven new furostanol glycosides were isolated from the ethanol extract of Smilax davidiana.
- The structures of new compounds were determined on the basis of NMR spectroscopy and HR-ESI-MS.
- Compounds 3, 5 and 7 were found to have modest anti-inflammatory effects.
- Davidianoside F (6) showed activity against MCF-7 and HELA cell lines.

Seven new furostanol saponins have been isolated from the rhizomes of Smilax davidiana. Their structures were established by 2D NMR spectroscopic techniques (1H,1H-COSY, NOESY, HSQC and HMBC), mass spectrometry and comparison with the literature. The isolated compounds were subjected to evaluate anti-inflammatory and cytotoxic activities in vitro. Compounds 3, 5 and 7 were found to have modest anti-inflammatory effects through suppression of IL-1β production and promote the expression of IL-10 in LPS-stimulated RAW 264.7 cells. Davidianoside F (6) showed activity against MCF-7 and HELA cell lines at the concentration of 10.2 µM and 4.3 µM, respectively.

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