Fig. 1
Chemical structures of compounds isolated from the leaves of Bauhinia thonningii. 6-C-methylquercetin-3, 4'-dimethyl ether (1); 6-C-methylquercetin-3,7-dimethyl ether (2); 6-C-methylquercetin 3,7,3'-trimethyl ether (3); quercetin (4); quercetin-3-O-L-rhamnopyranoside (5); quercetin-3-O-β-glucopyranoside (6); 6,8-C-dimethylkaempferol 3,7-dimethyl ether (7); 6,8-C-dimethylkaempferol-3-methyl ether (8); ursolic acid (9); 3-O-β-D-glucopyranoside of β-sitosterol (10)