A series of substituted azacycloalkyl analogues of the muscarinic agonist UH 5 (N-methyl-N- [4-(l-pyrolidinyl)-2-butynyl] acetamide, la) were synthesized and evaluated pharmacologically. These compounds were developed as intermediates for further derivatization leading to functionalized congeners of la. The compounds were synthesized by using a Mannich-type condensation of N-acetyl-N-methylpropargylamine to various ...