Journal
ARCHIVES OF PHARMACAL RESEARCH
Volume 23, Issue 5, Pages 467-470Publisher
PHARMACEUTICAL SOCIETY KOREA
DOI: 10.1007/BF02976574
Keywords
Angelica dahurica; linear furanocoumarin; long-range coupling ((5)J); imperatorin; isoimperatorin; oxypeucedanin hydrate; oxypeucedanin hydrate-3 ''-butyl ether; knidilin
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Five furanocoumarins including a new one were isolated from the root of Angelica dahurica by repeated silica gel column chromatography. Their chemical structures were determined to be isoimperatorin (1), oxypeucedanin hydrate-3-butyl ether (2), imperatorin (3), knidilin (4), and oxypeucedanin hydrate (5). This represents the first study in which the compound 2 has been isolated and identified. The long-range coupling ((5)J) in the H-1-NMR spectrum observed in the linear furanocoumarin skeleton was also investigated in detail.
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