Seven new vernocuminosides from the stem bark of Vernonia cumingiana Benth.Carbohydr Res. 2010 Jun 16; 345(9):1156-62.CR
Seven new stigmastane-type steroidal glycosides, vernocuminosides H-N, have been isolated from the stem bark of Vernonia cumingiana Benth. The structures of these compounds were determined by NMR spectrometric methods including HSQC, HMBC, (1)H-(1)H COSY, and NOE, as well as circular dichroism experiments. Anti-inflammatory activities of vernocuminosides I and K-N were determined.