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Bufadienolides from Urginea pancration
B Kopp1, M Unterluggauer, W Robien
1Institut für Pharmakognosie der Universität Wien, Währingerstr. 25, A-1090 Wien, Austria.
Abstract:
From bulbs of URGINEA PANCRATION (Steinh.) G. de Philippe (Hyacinthaceae) 5 bufadienolides were isolated by a combination of column and droplet counter-current chromatography; their structures were elucidated mainly by FAB-MS and (1)H- and (13)C-NMR spectroscopy. Besides the already known scilliglaucoside ( 1), scillirubroside ( 2), and scilliroside ( 3), two new bufadienolides were identified: 5alpha-4,5-dihydroscillirosidin- 3beta- O-alpha- L-thevetosido-4'-beta- D-glucopyranoside and arenobufagin-3beta- O- L-rhamnopyranosido-4'-beta- D-glucopyranoside.
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