title: [New flavonoid-glycosides from Crataegus monogyna and Crataegus pentagyna].
abstract: 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.
authors.affiliation: Chemical Pharmaceutical Research Institute, Sofia, Bulgarien.
authors.forename: N
authors.initials: N
authors.lastname: Nikolov
authors.forename: O
authors.initials: O
authors.lastname: Seligmann
authors.forename: H
authors.initials: H
authors.lastname: Wagner
authors.forename: R M
authors.initials: RM
authors.lastname: Horowitz
authors.forename: B
authors.initials: B
authors.lastname: Gentili