Muscarinic antagonists

Abstract

Amide derivatives of 1,4 di-substituted piperidine compounds of the formula or a pharmaceutically acceptable salt, ester or solvate thereof, wherein Q and Q1 are each —CH═, or one of Q and Q1 is —CH═ and the other is —N═; X is —CH2— or Y and Z are —C(R5)═, or one of Y and Z is —C(R5)═ and the other is —N═; R1 is 1 to 3 substituents selected from H, halogen and alkoxy; R2 and R5 are 1 to 3 substituents selected from H, halogen, alkyl and alkoxy; and R3 and R4 are H or (C1-C6)alkyl are muscarinic antagonists useful for treating cognitive disorders such as Alzheimer's disease. Pharmaceutical compositions and methods of preparation are also disclosed.

Dependencies are inferred from the claim text.