2-AMINOBENZAMIDE DERIVATIVE

摘要

Disclosed is a novel and excellent therapeutic or prophylactic agent for nociceptive pain, neuropathic pain, cancer pain, headache, bladder dysfunction or the like, which relies on a preventive activity on capsaicin receptor VR1 activation. It is found that a benzamide derivative having a benzene ring fused with a monocyclic ring on a nitrogen atom in the amide group and an amino group substituted by a lower alkylamino or cyclic group at a position adjacent to the amide group has a potent preventive activity on VR1 activation and an excellent pharmacological activity relying on the preventive activity, and therefore the derivative can be used as a good therapeutic or prophylactic agent for a VR1-related disease, such as nociceptive pain, neuropathic pain, cancer pain, headache and bladder dysfunction.