| abstract |
Acetylenic imidazole compounds comprising structural formula (I) or a therapeutically acceptable salt thereof, wherein X is H2 or O; R1 is hydrogen, methyl, ethyl, methylamino, dimethylamino, methoxy or ethoxy; R2 is hydrogen, methyl or ethyl or R1 and R2 are joined to form a cyclic ring which can be methyl or carbonyl substituted; and R3, R4 and R5 are independently chosen from hydrogen, methyl, ethyl, fluorine, chlorine, bromine or iodine, having cholinergic agonist or antagonist activity useful in the treatment of mental disorders, extrapyramidal motor disorders, disorders of the parasympathetic nervous system and glaucoma or as analgesics for the treatment of pain. Typical central nervous system disorders for which the subject compounds can be used include cognitive disorders of all ages, including senile dementia, Alzheimer's disease and other related disorders. The compounds are particularly developed to improve mental performance when a mental deficiency is diagnosed. |