The present invention relates to phenylethynyl compounds of formula I
wherein
R1, R2, X, L, R3, R4, R4′, 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
苯乙炔化合物,其中R1、R2、X、L、R3、R4、R4'、cyc和n如规范和权利要求所定义,并且涉及到药物可接受的酸加成盐、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)的阳性变构调节剂(P
AM)。它们可用于治疗精神分裂症或认知疾病。