Synthesis and SAR of a new class of 1-azabicyclo[2.2.1]heptan-3-one, O
-(3-methyl-5-aryl-2-penten-4-ynyl) oxime muscarinic agonists are descr
ibed. Depending on the geometry of the C=N and C=C bonds, subnanomolar
potency and/or high efficacy are achieved.