BICYCLIC COMPOUNDS AS .ALPHA.4.BETA.2 NICOTINIC ACETYLCHOLINE RECEPTOR LIGANDS

摘要

The present invention relates to novel bicyclic compounds of the formula (I), and their derivatives, prodrugs, tautomers, stereoisomers, polymorphs, solvates, hydrates, metabolites, N-oxides, pharmaceutically acceptable salts and compositions containing them. The present invention also relates to a process for the preparation of above said novel compounds, and their derivatives, prodrugs, tautomers, stereoisomers, polymorphs, solvates, hydrates, metabolites, N-oxides, pharmaceutically acceptable salts and compositions containing them. These compounds are useful in the treatment and prevention of various disorders that are related to a4ß2 nicotinic receptors.