The present invention relates to phenylethynyl compounds of formula I
wherein
R
1
, R
2
, X, L, R
3
, R
4
, R
4′
, cyc, and n are as defined in the specification and claims and 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 are useful for the treatment of schizophrenia or cognitive diseases.
本发明涉及公式I的苯基
乙炔化合物,其中R1、R2、X、L、R3、R4、R4'、cyc和n如规范和要求中所定义,并且涉及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疾病。