- Synthesis and binding affinity of 2-phenylimidazo[1,2-alpha]pyridine derivatives for both central and peripheral benzodiazepine receptors. A new series of high-affinity and selective ligands for the peripheral type. Trapani, G., Franco, M., Ricciardi, L., Latrofa, A., Genchi, G., Sanna, E., Tuveri, F., Cagetti, E., Biggio, G., Liso, G. J. Med. Chem. (1997)