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
公开了由式I表示的2-芳基
咪唑并[1,2-a]吡啶-3-乙酰胺衍
生物,它们的互变体、消旋体或光学异构体,它们的药学上可接受的盐,或它们的溶剂合物,其中R1、R2、R3和R4如规范中定义。所述化合物的制备方法以及所述化合物在治疗和/或预防与T
SPO功能紊乱相关的中枢神经系统疾病中的用途。