A class of imidazo[1,2-&agr;]pyrimidine derivatives, substituted at the 3-position by an optionally substituted five-membered or six-membered heteroaromatic ring, are selective ligands for GABA
A
receptors, in particular having good affinity for the &agr;2 and/or &agr;3 and/or &agr;5 subunit thereof, and are accordingly of benefit in the treatment and/or prevention of adverse conditions of the central nervous system, including anxiety, convulsions and cognitive disorders.
一类
咪唑[1,2-&agr;]
嘧啶衍
生物,在3位被一个可选择取代的五元或六元杂环芳香环所取代,是
GABAA受体的选择性
配体,特别是对其&agr;2和/或&agr;3和/或&agr;5亚单位具有良好的亲和力,因此对于治疗和/或预防中枢神经系统的不良病症,包括焦虑、惊厥和认知障碍具有益处。