The present invention relates to compounds of formula I
wherein R
1
, R
2
, R
3
, R
4
, and R
5
are as defined in the specification. Compounds of the invention are active on the GABAB receptor and are useful for treating a variety of CNS disorders, including anxiety, depression, epilepsy, schizophrenia, cognitive disorders, spasticity-and skeletal muscle rigidity, spinal cord injury, multiple sclerosis, amyotrophic lateral sclerosis, cerebral palsy, neuropathic pain and craving associated with cocaine and nicotine, psychosis, panic disorder, posttraumatic stress disorders and gastrointestinal disorders.
本发明涉及式I化合物,其中R1、R2、R3、R4和R5如规范中所定义。本发明的化合物在
GABAB受体上具有活性,并可用于治疗多种中枢神经系统疾病,包括焦虑、抑郁、癫痫、精神分裂症、认知障碍、痉挛和骨骼肌强直、脊髓损伤、多发性硬化症、肌萎缩性侧索硬化、脑瘫、神经病性疼痛和与
可卡因和
尼古丁有关的渴望、精神病、惊恐障碍、创伤后应激障碍和胃肠疾病。