Flavonoids from the leaves of Pleioblastus argenteastriatus

A new flavonoid, 5,7,3'-trihydroxy-6-C--d-digitoxopyranosyl-4'-O--d-glucopyranosyl flavonoside (1), along with four known flavonoids 5,7,4'-trihydroxy-3',5'-dimethoxy flavone (2), 5,3',4'-trihydroxy-7-O--d-glucopyranosyl flavonoside (3), 5,4'-dihydroxy-3',5'-dimethoxy-7-O--d-glucopyranosyl flavonoside (4), 5,3',4'-trihydroxy-6-C-[-d-glucopyranosyl-(16)]--d-glucopyranosyl flavonoside (5) were isolated from 95% EtOH extract of the leaves of Pleioblastus argenteastriatus. Their structures were determined on the basis of spectroscopic techniques and chemical methods.