A new kaempferol glycoside, kaempferol 3-O-α-rhamnopyranosyl-(1→6)-β-glucopyranoside-7,4’-di-O-β-glucopyranoside (1) was isolated from the flowers of Clematis cultivars ‘'Jackmanii Superba'’ and ‘'Fujimusume'’, together with the known compound kaempferol 3,7,4’-tri-O-β-glucopyranoside (2). The chemical structures of the isolated kaemferol glycosides were established by UV, 1H and 13C NMR spectroscopy, LC-MS, and characterization of acid hydrolysates.
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