COMPOUND, USE OF A COMPOUND, PHARMACEUTICAL COMPOSITION, AND METHODS FOR PAIN THERAPY IN A HOT BLOOD ANIMAL, SUPER ACTIVE BLADDER THERAPY IN A HOT BLOOD ANIMAL, AND TO PREPARE A COMPOUND.
Compounds of formula I or pharmaceutically acceptable salts thereof: wherein R1, R2, R3, R4, and R5 and are as defined in the specification as well as salts and pharmaceutical compositions including the compounds are prepared. They are useful in therapy, in particular in the management of pain.