Substituted imidazo [1,2-a] pyridine derivatives

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 R<1 >and R<2 >are selected from hydrogen, (C1-6)-alkyl, halogen, hydroxy, (C1-6)-alkoxy and A is defined the description, or a pharmaceutically acceptable salt thereof.