Two new flavone rhamnosides, apigenin 7-O-α-L-rhamnopyranosyl-(1→4)-O-α-L-rhamnopyranoside and apigenin 7-O-α-L-rhamnopyranosyl-(1→4)-O-α-L-rhamnopyranoside-4′-O-α-L-rhamnopyranoside were isolated from the fronds of Asplenium normale D. Don, together with two known C-glycosylflavones, vicenin-2 and lucenin-2. The chemical structures of the isolated glycosides were established by UV, LC-MS, characterization of acid hydrolysates, and 1H and 13C NMR spectroscopy.
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