| 摘要 |
The present invention is a series of novel compounds of formula I and a method of treatment or prevention of a mGluR5 receptor mediated disease by administering an therapeutically effective amount of a compound formulawherein R1 and R2 are selected from hydrogen, (C1-6)-alkyl, halogen, hydroxy, (C1-6)-alkoxy and A is defined the description, or a pharmaceutically acceptable salt thereof. |
