Flavone C-glycosides and Megastigmanes from the Leaves of Tinospora Sinensis

Abstract

Using various chromatographic methods, five compounds including three flavone C-glycosides, isoviolanthin (1), isoorientin (2), isovitexin (3), and two megastigmanes excoecarioside A (4), corchoionoside C (5) were isolated from the leaves of Tinospora sinensis (Lour.) Merr. Their structures were identified based on spectroscopic methods and comparisons with those reported in the literature.