The present invention relates to ethynyl derivatives of formula I
X, G, R1, R2, R3, R3′, R4, R4′, R5, R6, R6′, m, and n are as defined herein 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. Compounds of formula I are positive allosteric modulators (PAM) of the metabotropic glutamate receptor subtype 5 (mGluR5). They can be used for the treatment of schizophrenia or cognitive disorders.
本发明涉及公式IX的
乙炔衍
生物,其中G,R1,R2,R3,R3',R4,R4',R5,R6,R6',m和n的定义如本文所述,或其药学上可接受的酸加成盐,外消旋混合物或其对应的对映体和/或光学异构体和/或立体异构体。公式I的化合物是代谢型谷
氨酸受体亚型5(mGluR5)的正向变构调节剂(P
AM)。它们可用于治疗精神分裂症或认知障碍。