QSAR modeling of the interaction of flavonoids with GABA(A) receptor

P. DUCHOWICZ, M. VITALE, E. CASTRO, J. AUTINO, G. ROMANELLI, D. BENNARDI

EUROPEAN JOURNAL OF MEDICAL CHEMISTRY

Elsevier

Lugar: Amsterdam; Año: 2008 vol. 43 p. 1593 - 1602

0223-5234

Experimentally assigned values to binding affinity constants of flavonoid ligands towards the benzodiazepine site of the GABA(A) receptor complex were compiled from several publications, and enabled to perform a predictive analysis based on Quantitative Structure  Activity Relationships (QSAR). The best linear model established on 78 molecular structures incorporated four molecular descriptors, selected from more than a thousand of geometrical, topological, quantum mechanical and electronic types of descriptors and calculated by Dragon software. An application of this QSAR equation was performed by estimating the binding affinities for some newly synthesized flavonoids displaying 2-,7-substitutions in the benzopyrane backbone which still do not have experimentally measured potencies.