Abstract
The metal-chelating activity of a series of 48 chromone compounds, evaluated by ferrous (Fe2+) chelating test, were subjected to 3D-QSAR studies using comparative molecular field analysis (CoMFA) and comparative molecular similarity indices analysis (CoMSIA). The best CoMFA model obtained from HF/6-31G* geometry optimization and field fit alignment gave cross-validated r 2 (q 2) = 0.582, non-cross-validated r 2 = 0.975. The best CoMSIA model gave q 2 = 0.617, non-cross-validated r 2 = 0.917. The resulted CoMFA and CoMSIA contour maps proposed the Fe2+-chelating sites of chromone compounds compared with those of quercetin.
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