Three new isoflavans, manuifolin G, H and K were isolated from roots o
f Maackia tenuifolia. Their structures were established as droxy-3-met
hylbutyl)-7-2',4'-tri-hydroxyisoflavan, 6-(3-methyl-2-butenyl)-7,2',4'
-trihydroxyisoflavan and 1-dimethyl-2-propenyl)-7,2',4'-trihydroxyisof
lavan by spectroscopic methods. (C) 1998 Elsevier Science Ltd. All rig
hts reserved.