title: Bufadienolides from Urginea maritima sensu strictu.
abstract: Fourteen bufadienolides were isolated from bulbs of hexaploid URGINEA MARITIMA (L.) Baker SENSU STRICTU. The compounds were identified by means of FAB-MS, (1)-NMR and (13)C-NMR studies or comparison with authentic substances. Besides the already known proscillaridin A, scillaren A, glucoscillaren A, scilliphaeoside, glucoscilliphaeoside, 12- EPI-scilliphaeoside, gamabufotalin-3- O-alpha- L-rhamnoside, 16beta- O-acetyl-gamabufotalin-3- O-alpha- L-rhamnoside, scilliglaucoside, and scillicyanoside, four new bufadienolides were isolated: 5alpha-4,5-dihydroproscillaridin A, 5alpha-4,5-dihydroglucoscillaren A, gamabufotalin-3- O-alpha- L-rhamnosido-beta- D-glucoside, and 19-oxo-5alpha-4,5-dihydro-proscillaridin A.
authors.affiliation: Institut für Pharmakognosie der Universität Wien, Währingerstr.25, A-1090 Wien, Austria.
authors.forename: L
authors.initials: L
authors.lastname: Krenn
authors.forename: R
authors.initials: R
authors.lastname: Ferth
authors.forename: W
authors.initials: W
authors.lastname: Robien
authors.forename: B
authors.initials: B
authors.lastname: Kopp