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Use of topological indices in predicting aryl hydrocarbon receptor binding potency of dibenzofurans: A hierarchical QSAR approach

Topostructural (TS) and topochemical (TC) indices, geometrical descriptors, and ab initio (STO-3G) quantum chemical indices have been employed either alone or hierarchically in the development of quantitative structure-activity relationship (QSAR) models of the aryl hydrocarbon (Ah) receptor binding potency of a set of 34 dibenzofurans. Results show that, for the full set, the TS and TC indices explain most of the variance in the data. The addition of 3-D and quantum chemical indices makes only slight improvement in the predictive capability of QSAR models.