COMPOUNDS THAT ARE AGONISTS OF MUSCARINIC RECEPTORS AND THAT MAY BE EFFECTIVE IN TREATING PAIN, ALZHEIMER'S DISEASE AND/OR SCHIZOPHRENIA

摘要

Compounds of Formulae I, or pharmaceutically acceptable salts thereof: [Chemical formula should be inserted here. Please see paper copy] I wherein X, R₁, R₂ and R₃ are as defined in the specification as well as salts and pharmaceutical compositions including the compounds are prepared. They are useful in therapy, in particular in the management of pain.