Imidazo-triazine derivatives as ligands for gaba receptors

摘要

A class of 7-phenylimidazo[1,2-b][1,2,4]triazine derivatives, substituted at the meta position of the phenyl ring by an optionally substituted aryl or heteroaryl group which is directly attached or bridged by an oxygen atom or a -NH- linkage, being selective ligands for GABA_A receptors, in particular having good affinity for the alpha2 and/or alpha3 and/or alpha5 subunit thereof, are accordingly of benefit in the treatment and/or prevention of adverse conditions of the central nervous system, including anxiety, convulsions and cognitive disorders.