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Prenylated flavonoids from the aerial parts ofDorstenia mannii

Authors
Journal
Phytochemistry
0031-9422
Publisher
Elsevier
Publication Date
Volume
55
Issue
8
Identifiers
DOI: 10.1016/s0031-9422(00)00215-6
Keywords
  • Dorstenia Mannii
  • Moraceae
  • Aerial Parts
  • Pyranoflavanones
  • Furanoflavanones
  • Dorsmanins I
  • J
  • Epi-Dorsmanins F
  • G
  • Isolation

Abstract

Abstract Four new prenylated flavanones, dorsmanins I, J and epi-dorsmanins F, G, identified, respectively, as 6,7-(2,2-dimethylpyrano)-8-prenyl-5,3′,4′-trihydroxyflavanone, 6,7-(2,2-dimethyldihydropyrano)-8-prenyl-5,3′,4′-trihydroxyflavanone, and 2”-epimers of dorsmanins F and G were isolated from the aerial parts of Dorstenia mannii together with 13 known flavonoids: 4-hydroxylonchocarpin, 4-methoxylonchocarpin, 6-prenylchrysoeriol, 6,8-diprenyleriodictyol, gancaonin P and dorsmanins A–H. The structures of these secondary metabolites were determined by spectroscopic means and by comparison with published data and with authentic specimens for some of the known compounds.

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