Abstract
A novel furocoumarin isolated from unripe fruits of Angelica pachycarpa has been characterized as (+)-tert- O-methylbyakangelicin. (+)-tert- O-Methyloxypeucedanin hydrate, neobyakangelicol, (±)-byakangelicol, (+)-byakangelicin, phellopterin, isoimperatorin, oxypeucedanin, oxypeucedanin hydrate, pangeline and umbelliprenin were also identified along with (±)-byakangelicin monoacetate, which proved to be an artifact.
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