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Flavonoids and coumarins from Platymiscium praecox |
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| Authors: | A Braga de OliveiraLG Fonseca e Silva OR Gottlieb |
| Institution: | Instituto de Cieˆncias Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil |
| Abstract: | The wood of Platymiscium praecox Mart. (Leguminosae-Lotoideae) contains sitosterol, 4,2′,4′-trihydroxychalcone, (2R)-7-hydroxyflavanone, (±)-7,4′-dihydroxyflavanone, (2S, 3S)-3,7-dihydroxyflavanone, 3,7-dihydroxyflavone, 3,7,4′-trihydroxyflavone, 6,7-dihydroxy-4′-methoxyisoflavone and 6,7-dimethoxycoumarin. It also contains three novel compounds: 7-hydroxy-4-methoxy-5-methylcoumarin, 7-O-glucosyloxy-4-methoxy-5-methylcoumarin and 7-hydroxy-4,8-dimethoxy-5-methylcoumarin. |
| Keywords: | Platymiscium praecox Leguminosae isoflavone flavanones isoliquiritigenin flavones new C-methylcoumarins |
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