US Patent 8143270 2-amino 1

1H-Imidazo ring systems (e.g., imidazopyridines, imidazoquinolines, imidazonaphthyridines, 6,7,8,9-tetrahydro imidazoquinolines and imidazonaphthyridines) with an amino substituent at the 2-position, pharmaceutical compositions containing these compounds, methods of making the compounds, intermediates, and methods of use of these compounds as immunomodulators, for modulating cytokine biosynthesis in animals and in the treatment of diseases including viral and neoplastic diseases, are disclosed.