HETEROCYCLIC COMPOUNDS FOR TREATING INFLAMMATORY AND ALLERGIC DISORDERS, METHOD FOR THEIR PRODUCTION

摘要

The present invention relates to novel heterocyclic compounds, their analogs, their tautomers, their regioisomers, their stereoisomers, their enantiomers, their diastereomers, their polymorphs, their pharmaceutically acceptable salts, their appropriate N-oxides, their pharmaceutically acceptable solvates and their pharmaceutical compositions containing them. The present invention more particularly relates to novel Phosphodiesterase type 4 (PDE4) inhibitors of the formula (1), their analogs, their tautomers, their enantiomers, their diastereomers, their regioisomers, their stereoisomers, their polymorphs, their pharmaceutically acceptable salts, their appropriate N-oxide, their pharmaceutically acceptable solvates and the pharmaceutical compositions containing them. The groups X, Ar, Y, P and R1-R4 are defined in claim 1.