Chemical examination of roots of Maackia tenuifolia yielded three new isoflavans, manuifolins D, E, and F, along with the known (6aR, 12aR)-pterocarpin and (6aR,12aR)-maackiain. The new compounds were established as (3R)-5'-(1,1-dimethyl-2-propenyl)-4'- O-(3-methyl-2-butenyl)-