Understanding the interactions between metabolites isolated from Achyrocline satureioides in relation to its antibacterial activity

Combinations of compounds 23-methyl-6-O-desmethylauricepyrone (1), quercetin (2) and 3-O-methylquercetin (3), obtained through bioguided fractionation from Achyrocline satureioides, showed synergistic or additive effect for inhibiting growth of Escherichia coli and Staphylococcus aureus.