Bufadienolides from Urginea maritima from Egypt.
Forty-one bufadienolides were isolated from the bulbs of Urginea maritima agg. from Egypt; 26 of them are new natural compounds. Structure elucidation was performed by comparison with authentic substances or by means of 1H, 13C NMR and FAB mass spectroscopy. Sixteen of the glycosides derive from nine structurally new aglycones: 16 beta-hydroxy-scillarenin, 16 beta-O-acetyl- scillarenin, 12 beta-hydroxy-5 alpha-4,5-dihydro-scillirosidin, 16 beta- hydroxy-5 alpha-4,5-dihydro-scillirosidin, 16 beta-O-acetyl-5 alpha-4,5- dihydro-scillirosidin, 12 beta-hydroxy-scillirubrosidin, 16 beta-O-acetyl- scillirubrosidin, 9-hydroxy-scilliphaeosidine and 12 beta-hydroxy-desacetyl- scillirosidine.
Kopp
B
B
Institute of Pharmacognosy, University of Vienna, Austria.
Krenn
L
L
Draxler
M
M
Hoyer
A
A
Terkola
R
R
Vallaster
P
P
Robien
W
W
D002018:Bufanolides; D002770:Cholenes / Q000737:chemistry* / Q000302:isolation & purification; D004534:Egypt; D006027:Glycosides; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D010936:Plant Extracts; D018517:Plant Roots; D010946:Plants, Medicinal; D016339:Spectrometry, Mass, Fast Atom Bombardment
D002018:Bufanolides; D002770:Cholenes; D006027:Glycosides; D010936:Plant Extracts; C087925:bufadienolide