Planifolin, a new naphthopyranone dimer and flavonoids from Paepalanthus planifolius.
A new naphthopyranone dimer (1) named planifolin was isolated from a methylene chloride extract of the capitula of Paepalanthus planifolius. The structure of 1 has been determined by chemical and spectroscopic means. In addition, a known dihydronaphthopyranone glycoside and seven known flavonoids were isolated from an ethanolic extract of the leaves of P. planifolius.
Santos
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Instituto de Química, UNESP, CP 355, CEP 14801-970, Araraquara, SP, Brazil.
Piacente
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Pizza
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Albert
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Dachtler
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Vilegas
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D002855:Chromatography, Thin Layer; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D009284:Naphthols / Q000737:chemistry* / Q000302:isolation & purification; D010936:Plant Extracts / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011753:Pyrones / Q000737:chemistry* / Q000302:isolation & purification; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
D005419:Flavonoids; D009284:Naphthols; D010936:Plant Extracts; D011753:Pyrones; C428192:planifolin