| abstract |
The invention provides compounds of formula I: wherein a, b, c, m, n, q, r, W, Z1, Ar1, Z2, Y, R1, R2, and R3 are as defined in the specification. The compounds of formula I are muscarinic receptor antagonists. The invention also provides pharmaceutical compositions containing such compounds, processes and intermediates for preparing such compounds and methods of using such compounds to treat pulmonary disorders. |