Abstract
Two new flavone glycosides with an unusual interglycosidic linkage have been isolated from the petals of Salvia uliginosa and identified by NMR spectroscopy as apigenin 7-O- β- d-glucopyranosyl-(1→ → 4″)-β- d-glucopyranoside and apigenin 7-O- β- d-glucopyranosyl-(1→ → 4″)-β- d-glucopyranoside -4′-O- β- d-glucopyranoside . The NMR and UV spectra of these compounds were compared with those of the known compound, apigenin 7,4′-O,O- di-β- d-glucopyranoside , which was isolated from the same source.
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