The invention relates to a compound of formula (I):
wherein:
R1 represents halogen or a group CF3,
R2 represents aryl or heteroaryl,
R3 and R4 are as defined in the description and methods for using the same.
本发明涉及一种化合物,其
化学式为(I):其中:R1代表卤素或
CF3基团,R2代表芳基或杂环芳基,R3和R4如本说明中所定义,并提供使用该化合物的方法。