Compounds of formula (I) or a derivative thereof: wherein A, B, Z, R1, R2a, R2b, Rx, R8, and R9 are as defined in the specification, a process for the preparation of such compounds, pharmaceutical compositions comprising such compounds and the use of such compounds in medicine.
式(I)的化合物或其衍
生物:其中A、B、Z、R1、R2a、R2b、Rx、R8和R9如规范中定义,制备这种化合物的方法,包含这种化合物的药物组合物以及这种化合物在医学上的用途。