| [new flavonoid-glycosides from crataegus monogyna and crataegus pentagyna]. | from the leaves and flowers of crataegus monogyna and c. pentagyna six new flavonoid-c- and o-glycosides respectively have been isolated and identified as 2''-o-rhamnosyl-orientin, 2''-o-rhamnosyl-isoorientin, 2''-o-rhamnosyl-isovitexin, rutin, spiraeosid, 8-methoxy-kämpferol and 8-methoxy-kämpferol-3-o-glucoside. the structure of o-rhamnosyl-vitexin and o-acetyl-o-rhamnosyl-vitexin isolated previously, have been elucidated unambigiously mainly by nmr- and ms-spectroscopy. | 1982 | 17402083 |