Myroxylon balsamum (Leguminosae-Lotoideae) trunk wood contains a series of biogenetically related flavonoids, including the novel (+ )-7-hydroxy-4'-methoxyisoflavanone, (+)-7,3'-dihydroxy-4'-methoxyisoflavanone and 2-(2',4'-dihydroxyphenyl)-5,6-dimethoxybenzofuran.