Table 3.

Binding energies and protein–ligand interaction details of PBP2a with 2-chlorounguinol, unguinol, nidulin and (E)-3-(2-(4-cyanostyryl)-4-oxoquinazolin-3(4H)-yl) benzoic acid by AutoDock Vina.

Compounds	Binding free energy (kcal/mol)
2-chlorounguinol	−6.7
unguinol	−6.6
nidulin	−6.0