The present invention aims to provide novel compounds of formula [I] or pharmaceutically acceptable salts thereof that are based on a glycine uptake inhibiting action and which are useful in the prevention or treatment of such diseases as schizophrenia, Alzheimer's disease, cognitive dysfunction, dementia, anxiety disorders (generalized anxiety disorder, panic disorder, obsessive-compulsive disorder, social anxiety disorder, posttraumatic stress disorder, specific phobia, acute stress disorder, etc.), depression, drug addiction, spasm, tremor, pain, and sleep disorder:
本发明旨在提供公式[I]的新化合物或其药学上可接受的盐,其基于甘
氨酸摄取抑制作用,并且在预防或治疗精神分裂症、阿尔茨海默病、认知功能障碍、痴呆、焦虑症(广泛性焦虑症、惊恐症、强迫症、社交焦虑症、创伤后应激障碍、特定恐惧症、急性应激障碍等)、抑郁症、药物成瘾、痉挛、震颤、疼痛和睡眠障碍方面有用。