The invention provides compounds of the formula II:
wherein R represents propyl, butyl, pentyl, neo-pentyl or cyclohexyl, and salts thereof. These compounds are selective GABA
C
receptor antagonists. The invention also provides a method of enhancing the cognitive activity of an animal and a method of stimulating memory capacity in an animal, comprising administering to the animal an effective amount of a compound of formula II or a pharmaceutically acceptable salt thereof.
本发明提供了公式II的化合物:其中R代表丙基,丁基,戊基,新戊基或环己基,以及其盐。这些化合物是选择性的
GABAC受体拮抗剂。本发明还提供了一种增强动物认知活动和刺激动物记忆能力的方法,包括向动物投与公式II或其药学上可接受的盐的有效量。