The present invention relates to compounds of formula I
wherein R1, R2 and R3 are as defined in the specification, which are active at the GABAB receptor and which can be used for the treatment of CNS disorders.
本发明涉及式I的化合物,其中R1、R2和R3如规范中所定义,这些化合物在
GABAB受体上具有活性,并可用于治疗中枢神经系统疾病。