A data set of 46 studied flavone inhibitors of ALR2 was selected from the published literature [17]. The ALR2 inhibitory activity of the selected molecules was reported as pIC50 value in the literature, which corresponds to the negative logarithm of dose required to produce 50% ALR2 inhibition (−log IC50). The ALR2 inhibitory activity of the selected molecules was determined using a same experimental protocol, and pIC50 value spanned over a wide range, i.e. 7.55–3.00. The chemical structures of all molecules were sketched using “builder tools” option of “Maestro” program version 9.3 [31], and then their 3D geometries were energy optimized in “LigPrep” program version 2.5 [32] using “OPLS_2005” force field [33]. The least energy conformers of all molecules were generated employing ‘systematic torsional sampling’ algorithm, and thereafter the ionic states were generated at pH value of 7.0 ± 0.2—a pH value used during ALR2 activity (pIC50) determination of 46 studied molecules