Chromone acyl glucosides and an ayanin glucoside from Dasiphora parvifolia

Abstract Two new chromone acyl glucosides, 5-hydroxy-7- O -(6- O - p - cis -coumaroyl-β- D -glucopyranosyl)-chromone ( 1 ) and 5-hydroxy-7- O -(6- O - p - trans -coumaroyl-β- D -glucopyranosyl)-chromone ( 2 ), and a new flavonoid glucoside, ayanin 3′- O -β- D -glucopyranoside ( 3 ) were isolated from aerial parts of Dasiphora parvifolia , together with flavonoid glycosides ( 4 – 10 ), catechins ( 11 , 12 ), and hydrolysable tannins ( 13 , 14 ). The chemical structures of these compounds were elucidated on the basis of spectroscopic data. The 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity and the hyaluronidase inhibitory activity of these compounds were evaluated.