The invention provides a compound of the formula I:
wherein R is methyl, ethyl, propyl, isopropyl, butyl, pentyl, neo-pentyl or cyclohexyl, or a salt or solvate thereof. These compounds are selective GABA
C
receptor antagonists. The invention also provides pharmaceutical compositions comprising a compound of formula I or a pharmaceutically acceptable salt or solvate thereof. The invention also provides methods of enhancing the cognitive activity of an animal and methods of stimulating memory capacity in an animal, comprising the step of administering to the animal an effective amount of a compound of formula I or a pharmaceutically acceptable salt or solvate thereof.
本发明提供一种化合物,其
化学式为I:其中R为甲基、乙基、丙基、异丙基、丁基、戊基、新戊基或环己基,或其盐或溶剂化物。这些化合物是选择性的
GABAC受体拮抗剂。本发明还提供包括化合物I或其药学上可接受的盐或溶剂化物的制药组合物。本发明还提供增强动物认知活动和刺激动物记忆能力的方法,其中包括向动物施用化合物I或其药学上可接受的盐或溶剂化物的有效量。