A compound of formula (I) or a pharmaceutically acceptable derivative thereof,
wherein R1,R2, R3, R4, R5, X, m and n are defined in the specification; a process for preparing such compounds; a pharmaceutical composition comprising such compounds; and the use of such compounds in medicine.
式 (I) 的化合物或其药学上可接受的衍
生物、
其中 R1、R2、R3、R4、R5、X、m 和 n 在说明书中定义;制备此类化合物的工艺;包含此类化合物的药物组合物;以及此类化合物在医学中的用途。