Fig. 4
From: Anti-leukemia activity of semi-synthetic phenolic derivatives from Polygonum limbatum Meisn.
Cytotoxicity activity of compounds on leukaemia CCRF-CEM cells at 125 μM.5,7-dihydroxy-3-(1′-hydroxy-1′-phenyl-methyl)-6-methoxy-chroman-4-one (A), 2′,4′-dihydroxy-3′,6′-dimethoxychalcone (B); 5-hydroxy-6-methoxy-7-O-(3′,3′-dimethylprop-2′-enyl)chroman-4-one (1), 5-acetyl-6-methoxy-7-O-(3′,3′-dimethylprop-2′-enyl)chroman-4-one (2), 2′-hydroxy-3′,6′-dimethoxy-4′-O-(3″,3″-dimethylprop-2″-enyl)chalcone (3), 2′-acetyl-3′,6′-dimethoxy-4′-O-(3″,3″-dimethylprop-2″-enyl)chalcone (4). Doxorubicin was used as a positive control