Pterocarpans from Swartzia laevicarpa |
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| Authors: | Raimundo Braz Filho Miguel PL De Moraes Otto R Gottlieb |
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| Institution: | 1. Instituto de Ciências Exatas, Universidade Federal Rural do Rio de Janeiro, 23460 Scropédica, RJ, Brazil;2. Instituto de Química, Universidade de São Paulo, 05508 São Paulo, SP, Brazil |
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| Abstract: | An ethanol extract of the trunkwood from Swartzia laevicarpa (Leguminosae) gave four (6aR,11aR)-8-hydroxy-3,9-dimethoxypterocarpans differentiated by additional 2-hydroxy, 2-hydroxy-10-methoxy, 4,10-dimethoxy and 2-hydroxy-4,10-dimethoxy substitution; besides two 8-hydroxy-6-methoxy-3-methylisocoumarins differentiated by 5-chloro and 7-chloro substitution; 5-hydroxy-7,8-dimethoxy-2-methylchromone and the known 8-hydroxy-5-methyl-3,4-dihydroxyisocoumarin. |
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| Keywords: | Leguminosae pterocarpans dihydroisocoumarin isocoumarins chromone |
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