Three new isoflavonoids, griffonianone A (1), B (2) and C (4) were isolated
from the root bark of Millettia griffoniama, along with the known maximais
oflavone G (5) and 7-hydroxy-6-methoxy-3',4'-methylenedioxyisoflavone (6).
Their structures were assigned on the basis of spectroscopic data and chemi
cal transformations. (C) 2001 Elsevier Science Ltd. All rights reserved.