Two new c-glycosylflavones from Mimosa pudica

Two new C-glycosylflavones were isolated from the whole plant of Mimosa pudica, and their structures were determined as 6,7,3 ',4 '-tetrahydroxyl-8-C-[alpha-L-rhamnopyranosyl-(1 -> 2)]-beta-D-glueopyranosyl flavone (1), 5,7,3 ',4 '-tetrahydroxy-8-C[beta-D-apiose-(1 -> 4)] -beta-D-glycopyranosyl flavone (2). Their structures elucidated by chemical and spectroscopic analysis including IR, MS, 1D and 2D NMR spectra. (c) 2007 Ke Yuan. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.