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6-Methoxyflavonols from disjunct populations ofBrickellia cylindracea(compositae)

Authors
Journal
Biochemical Systematics and Ecology
0305-1978
Publisher
Elsevier
Publication Date
Volume
11
Issue
1
Identifiers
DOI: 10.1016/0305-1978(83)90027-3
Keywords
  • Brickellia Cylindracea
  • Compositae
  • Eupatorieae
  • Alomiinae
  • 6-Methoxyflavonol Methyl Ethers
  • Glycosides
  • Geographically Disjunct Populations

Abstract

Abstract Eight identical 6-methylated flavonols including aglycones and glycosides were isolated from two geographically disjunction population of Brickellia cylindracea from Mount Livermore and Austin, Texas, suggesting that they are best treated as a single taxon. Among the flavonol aglycones identified were patuletin, centaureidin, quercetagetin 3,6,3′,4′-tetramethyl ether and artemetin. The flavonol glycosides were patuletin and its 3-galactoside, 3-galactogalactoside, 3-rhamnogalactoside and a 3-rhamnogalactoside derivative.

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