Phenyl urea and phenyl thiourea derivatives as orexin receptor antagonists

摘要

The present invention provides phenyl urea and phenyl thiourea derivatives which are non-peptide antagonists of human orexin receptors, in particular orexin-1 receptors, of formula (I)in which:Z represents oxygen or sulfur; and R<1 >to R<7 >represent various substituent groups; and pharmaceutically acceptable salts thereof. In particular, these compounds are of potential use in the treatment of obesity including obesity observed in Type 2(non-insulin-dependent) diabetes patients and/or sleep disorders.