Two novel C-glycosylflavones, apigenin-6-C-α-L-arabinopyranosyl-(1-4)-α-L-rhamnopyranoside (hemsleyanoside, 1) and apigenin-8-C-α-L-arabinopyranosyl- (1-4)-α-L-rhamno-pyranoside (isohemsleyanoside, 2), together w...
Five compounds (1 - 5) were isolated from the rhizome of Beesia calthaefolia (Maxim.) Ulbr. Based on chemical and spectral evidence, their structures were determined as beesic acid (9-phenyl-2E, 4E, 6E, 8E-nontetraeno...