Naphthyridine derivatives, their preparation and their use as phosphodiesterase isoenzyme 4 (PDE4) inhibitors

摘要

The invention relates to compounds of formula I in free or salt form, where RSUP1 /SUPis a monovalent aromatic group having up to 10 carbon atoms, and RSUP2 /SUPis a cycloaliphatic group having up to 8 ring carbon atoms. Compositions containing them, methods for their preparation and their use as pharmaceuticals are also described.