Three flavonoids were isolated for the first time from the Sudanese medicinal plants
Albizia zygia
. Compounds
1-3
were identified by interpretation of ESI mass data,
1H,
13C and 2D NMR as well as by comparison with published data as
4',7-dihydroxyflavanone (
1) 3',4',7-trihydroxyflavone (
2), 3-
O-methylfisetin (3',4',7-trihydroxy-3-methoxyflavone,
3). All
flavonoids were tested against
Plasmodium falciparum
, and only compound
2 showed high antimalarial activity (IC
50 0.078
μg/ml).