QUINUCLIDINE DERIVATIVES AND THEIR USE AS MUSCARINIC M3 RECEPTOR ANTAGONISTS

摘要

Compounds of Formula (I) ; in salt or zwitterionic form wherein R1, R2, R3 and R4 have the meanings as indicated in the specification, are useful for treating conditions that are mediated by the muscarinic M3 receptor, especially inflammatory or obstructive airways diseases. Pharmaceutical compositions that contain the compounds and a process for preparing the compounds are also described.