Bufadienolides from Urginea maritima sensu strictu.
Ključne besede
Povzetek
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.