Polyoxygenated flavones from the leaves of comptonella microcarpa
The leaves of Comptonella microcarpa have yielded one alkaloid, dictamnine, and four known polyoxygenated flavonoids, meliternatin, 3,5,8-trimethoxy-6,7-3',4'-dimethylenedioxyflavone, 7-(3-methylbut-2-enyloxy)-3,5,8-trimethoxy-3', 4'-methylenedioxyflavone (3), 7-hydroxy-3,5,8-trimethoxy-3', 4'methylenedioxyflavone. In addition, two new flavonoids were found whose structures were established on the basis of their spectral data as 7-hydroxy-3,5,6,8-tetramethoxy-3',4'-methylenedioxyflavone (1) and 7-(3-methylbut-2-enyloxy)-3,5,6,8-tetramethoxy-3', 4'-methylenedioxyflavone (2).
Girard
C
Laboratoire de Pharmacognosie, Faculte de Medecine et de Pharmacie, Place St. Jacques, F25030 Besancon Cedex, France, Departement de Pharmacognosie, U.R.A. au C.N.R.S. 1310, Universite Rene Descartes, 4 avenue de l'Observatoire, F75006 Paris Cede.
Muyard
F
Bevalot
F
Tillequin
F
Vaquette
J
Sevenet
T
Litaudon
M