２−アリールイミダゾ［１，２−ａ］ピリジン−３−アセトアミド誘導体、その調製方法及び使用

摘要

Disclosed are 2-arylimidazo[1,2-a]pyridine-3-acetamide derivatives represented by formula I, their tautomer, racemate or optical isomer, their pharmaceutically acceptable salt, or their solvates, wherein R 1 , R 2 , R 3 and R 4 are defined as in the specification. Preparation methods of said compounds and use of said compounds in treating and/or preventing central nervous system disease associated with TSPO functional disorder