Fig. 3

a Common Pharmacophoric hypothesis (AHHRRR_1). The Pharmacophoric feature A: H-bond acceptor; appear as light pink sphere with two arrows, H: hydrophobic group; appear as green spheres, R: aromatic rings appear as orange torus in the plane of the ring. b Pharmacophoric hypothesis (AHHRRR_1) for active ligand 3. c Pharmacophoric hypothesis (AHHRRR_1) for inactive ligand 18