Compounds Useful In Therapy

摘要

Compounds of formula (I), or pharmaceutically acceptable derivatives thereof, wherein: R¹ represents a group selected from H, CF₃, and C_1-6 alkyl (optionally substituted by C_1-6 alkyloxy or triazolyl); R² represents halo; Ring A represents a 5- or 6-membered heterocyclic ring containing at least one N atom (the ring being optionally bridged with two or more carbon atoms); R³ represents a 5- or 6-membered heterocyclic ring containing at least one atom selected from N, O or S, the heterocyclic ring being optionally substituted by one or more groups selected from C_1-6 alkyl oxo or NH₂, the heterocyclic ring being further optionally fused to a 5- or 6-membered aryl or heterocyclic ring containing at least one atom selected from N, O or S, the fused aryl or heterocyclic ring being substituted by one or more halo atoms; are useful for treating a disorder for which a V1a antagonist is indicated, in particular, dysmenorrhea.