BENZIMIDAZOLE DERIVATIVES, COMPOSITIONS CONTAINING THEM, PREPARATION THEREOF AND USES THEREOF

摘要

Compounds of formula (I) or pharmaceutically acceptable salts thereof: Formula (I) wherein R<1>, R<2>, RF<1>, RF<2> and Z 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.