4-(2-KETO-1-BENZIMIDAZOLINYL) PIPERIDINE COMPOUNDS AS ORL1-RECEPTOR AGONISTS

摘要

A compound of the formula:or the pharmaceutically acceptable salts thereof, wherein R1, R2, R3, R4 and R5 are defined above are useful as ORL1-receptor agonists, and useful as analgesics or the like in mammalian subjects.