Highly oxygenated flavonoids from Ageratum corymbosum |
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Authors: | L. Quijano J.S. Calderon F.Gómez G I.E. Soria T. Rios |
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Affiliation: | Instituto de Química de la Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México 20, D.F.Mexico |
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Abstract: | The investigation of Ageratum corymbosum resulted in the isolation of four new highly oxygenated flavonoids, and their structures established by spectroscopic and degradative evidence as 5,6,7,5′-tetramethoxy-3′,4′-methylenedioxyflavanone; 5,6,7,8,5′-pentamethoxy-3′,4′-methylenedioxyflavanone; 5,6,7,8,2′,4′,5′-heptamethoxy-flavone and 5,2′,4′-trihydroxy-6,7,8,5′-tetramethoxyflavone. The recently reported gardenin A monomethyl ether and 5′-methoxylucidin dimethyl ether (eupalestin) were also isolated. |
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Keywords: | Compositae Eupatorieae new flavanones new flavones. |
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