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Flavonoids from the Aerial Part of Cephalaria gigantea

  • V. A. Kurkin,
  • O. A. Kalashnikova,
  • V. M. Ryzhov,
  • T. K. Ryazanova,
  • A. V. Zhdanova,
  • L. M. Khalilov

摘要

Cynaroside, cosmosiin, isoorientin, kaempferol, quercimeritrin, and gigantoside B, which was a new compound with the structure 3,5,7,3′,4′-pentahydroxyflavone 7-O-(6′′-O-β-D-xylopyranosyl)-β-Dglucopyranoside, were isolated for the first time from the aerial part of Cephalaria gigantea (Ledeb.) Bobrov cultivated in Samara Region. The chemical structures of the isolated flavonoids were studied using UV, 1H and 13C NMR spectroscopy; mass spectrometry; and chemical transformations.