The present invention relates to compounds of the general formula
1
wherein
X and Y are each independently selected from —CH
2
— or —O—, with the proviso that X and Y are not simultaneously —O—; A is —S(O)
2
— or —C(O)—; and R
1
, R
2
, R
3
, and R
4
are as defined in the specification. The compounds are GlyT-1 inhibitors and are useful for the treatment of psychoses, pain, dysfunction in memory and learning, schizophrenia, dementia and other diseases in which cognitive processes are impaired, such as attention deficit disorders or Alzheimer's disease.
本发明涉及一般式1的化合物,其中X和Y分别独立地选自—
CH2—或—O—,但X和Y不能同时为—O—;A为—S(O)2—或—C(O)—;而R1、R2、R3和R4如规范中所定义。这些化合物是GlyT-1
抑制剂,可用于治疗精神病、疼痛、记忆和学习功能障碍、精神分裂症、痴呆症以及其他认知过程受损的疾病,如注意力缺陷障碍或阿尔茨海默病。