申请人:Jaeschke Georg
公开号:US08772300B2
公开(公告)日:2014-07-08
The present invention relates to ethynyl derivatives of formula I
wherein
Y is N or C—R3;
R3 is hydrogen, methyl, halogen or nitrile;
R1 is phenyl or pyridinyl, each of which is optionally substituted by halogen, lower alkyl or lower alkoxy;
R2/R2′ are each independently hydrogen, lower alkyl or lower alkyl substituted by halogen,
or R2 and R2′ together with the N-atom to which they are attached form a morpholine ring, a piperidine ring or an azetidine ring, each of which is unsubstituted or substituted one or more substituents selected from lower alkoxy, halogen, hydroxy and methyl;
R4/R4′ are each independently hydrogen or lower alkyl,
or R4 and R4′ together form a C3-5 cycloalkyl-, tetrahydrofuran- or an oxetane-ring;
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).
本发明涉及公式I的乙炔衍生物,其中Y为N或C—R3;R3为氢,甲基,卤素或腈基;R1为苯基或吡啶基,每个基团可以选择性地被卤素,低碳基或低碳氧基取代;R2/R2'各自独立地为氢,低碳基或被卤素取代的低碳基,或者R2和R2'与它们所连接的N原子一起形成一个吗啡环,哌啶环或氮杂环,每个基团可以是未取代的或取代了一个或多个来自低碳氧基,卤素,羟基和甲基的取代基;R4/R4'各自独立地为氢或低碳基,或者R4和R4'一起形成一个C3-5环烷基,四氢呋喃基或氧杂环,或者其对应的内消旋体和/或光学异构体和/或立体异构体的药学上可接受的酸盐。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(PAM)。