Pterocarpans from Swartzia laevicarpa

Phytochemistry
1980.0

Abstract

An ethanol extract of the trunkwood from Swartzia laeuicarpa (Leguminosae) gave four (6aR,llaR)-8 hydroxy-3,9-dimethoxypterocarpans differentiated by additional 2-hydroxy, 2-hydroxy-lo-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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