Planifolin, a new naphthopyranone dimer and flavonoids from Paepalanthus planifolius
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Amer Chemical Soc
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A new naphthopyranone dimer (I) 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.
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Journal of Natural Products. Washington: Amer Chemical Soc, v. 64, n. 1, p. 122-124, 2001.
