A class of pyrido[2,3-d]pyridazine derivatives, possessing an optionally substituted cycloalkyl, phenyl or heteroaryl substituent at the 8-position, a substituted alkoxy moiety at the 2-position, and a range of substituents at the 3-position, are selective ligands for GABAA receptors, in particular having high 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
吡啶并[2,3-d]
吡啉嗪衍
生物,其在8位具有可选择的取代
环烷基、
苯基或杂环芳基取代基,2位具有取代烷
氧基团,3位具有一系列取代基,是
GABAA受体的选择性
配体,特别具有高亲和力与其α2和/或α3和/或α5亚基结合,因此对治疗和/或预防中枢神经系统的不良状况,包括焦虑、抽搐和认知障碍,具有益处。