The present invention relates to ethynyl derivatives of formula (I) wherein Y is N or CH R1 is fluoro or chloro R2 is hydrogen or methyl or to a pharmaceutically acceptable acid addition salt, to a racemic mixture, or to its corresponding enantiomer and/or optical isomer and/or stereoisomer thereof. It has now surprisingly been found that the compounds of general formula I are metabotropic glutamate receptor antagonists (negative allosteric modulators) for use in the treatment of anxiety and pain, depression, Fragile-X syndrom, autism spectrum disorders, Parkinson's disease, and gastroesophageal reflux disease (GERD).
本发明涉及公式(I)的
乙炔衍
生物,其中Y为N或CH,R1为
氟或
氯,R2为氢或甲基,或其药学上可接受的酸加盐,或其对映体和/或光学异构体和/或立体异构体。现已惊奇地发现,一般公式I的化合物是代谢型谷
氨酸受体拮抗剂(负性变构调节剂),可用于治疗焦虑和疼痛,抑郁症,脆性X综合症,自闭症谱系障碍,帕
金森病和胃食管反流病(GERD)。