Pyridazin-3(2H)-one derivatives and their use as PDE4 inhibitors

摘要

Disclosed is pyridazine-3(2H)-one derivatives of formula (I) wherein the substituents are disclosed within the specification. Also disclosed is the use of a compound of formula (I) in the manufacture of a medicament for the treatment or prevention of a pathological condition or disease susceptible to amelioration by inhibition of phosphodiesterase 4.