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]
吡嗪衍
生物,其在8位具有可选取代的环烷基、苯基或杂环芳基取代基,在2位具有取代的烷氧基官能团,在3位具有一系列取代基,是
GABAA受体的选择性
配体,特别是具有高亲和力的α2和/或α3和/或α5亚基,因此对于中枢神经系统的不良状况,包括焦虑、惊厥和认知障碍的治疗和/或预防是有益的。