Abstract
Three-dimensional quantitative structure-activity relationships were studied on 35 natural aurone derivatives by the Topomer CoMFA method to establish the 3 D-QSAR models, and exerting potent affections as Qo site inhibitors in cytochrome b activity for anti-malaria. The cross-validated q2 value of the Topmer CoMFA model = 0.539, the non-cross-validated r2 = 0.793, = 0.960, which revealed the model has good stability and predictability. The steric and electrostatic field visualization provided by the Topomer CoMFA model intuitively revealed the effects of different substituent structures. Using this information for molecule design, we theoretically obtained some new aurone derivatives as antimalarial drugs with higher activity. Furthermore, molecular docking was employed to explore the binding requirements between the ligands and the receptor protein. We obtained space relations by hydrogen bonds and hydrophobic interactions between aurone derivatives and the active site residues. The observations from these QSAR and molecular docking studies can be further used to design promising antimalarial drugs.
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