Chemotaxonomic relevance of cardenolides in Urginea fugax

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• 作者：Krenn ; Liselotte ; H??fner ; Antje ; Kastenhuber ; Anna ; Speta ; Franz
• 关键词：Urginea fugax ; Urgineoideae ; Cardenolides ; 12???? ; 14????-Dihydroxy-2???? ; 3????-(tetrahydro-3?????? ; 5??????-dihydroxy-4??????-methoxy-6??????-methyl-2H-pyran-2?????? ; 4??????-diylbisoxy)-card-4 ; 20-d
• 刊名：Phytochemistry
• 出版年：2004
• 出版时间：November, 2004
• 年：2004
• 卷：65
• 期：21
• 页码：2881-2884
• 全文大小：262 K

文摘

In a chemotaxonomic approach the investigation of a methanolic extract of bulbs of Urginea fugax (MORIS) STEINH. resulted in the detection of several cardenolides. The structure of a novel compound, named fugaxin (1), was established as 12??,14??-dihydroxy-2??,3??-(tetrahydro-3???,5???-dihydroxy-4???-methoxy-6???-methyl-2H-pyran-2???,4???-diylbisoxy)-card-4,20-dienolide by extensive NMR spectroscopic studies including 2D-NMR techniques (COSY, HSQC, HMQC) and selective 1D experiments (NOE, TOCSY) as well as HR-ESI-MS. The chemotaxonomic relevance of the occurrence of cardenolides in the genus Urginea is discussed.