A new lyoniresinol derivative from Smilax microphylla.

A new lignan, lyoniresinol-9-O-8"-syringylglycerol ether (1), together with five known compounds, piceatannol (2), resveratrol (3), oxyresveratrol (4), quercetin-3'-glucoside (5) and diosgenin (6) were isolated from the rhizomes of Smilax microphylla. The structure of the new compound was determined by means of chemical evidence and 1D-and 2D-NMR (1H, 13C, HSQC, HMBC, 1H-1H COSY and NOESY) spectroscopic analysis and HR-ESI-MS.