Compounds of formula (I) or a pharmaceutically acceptable derivative thereof:
wherein A, B, D, Z, R
1
, R
2a
, R
2b
, and R
x
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.
Compounds of formula (I) or a pharmaceutically acceptable derivative thereof: wherein A, B, D, Z, R1, R2a , R2b, and Rx 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 treating conditions mediated by the action of PGE2 at EP1 receptors. Such conditions include pain, or inflammatory, immunological, bone, neurodegenerative or renal disorders.