Patent Number: 7,820,669

Title: 2-(piperidin-4-yl)-4,5-dihydro-2H-pyridazin-3-one derivatives as PDE4 inhibitors

Abstract: The compounds of a certain formula (1), ##STR00001## in which R1, R2, R3 and R9 have the meanings as given in the description, are novel effective PDE4 inhibitors.

Inventors: Menge; Wiro M. P. B. (HM Arnhem, NL), Sterk; Geert Jan (JJ Utrecht, NL)

Assignee: NYCOMED GmbH

International Classification: C07D 401/04 (20060101); A61K 31/501 (20060101); A61P 29/00 (20060101); A61P 9/10 (20060101)

Expiration Date: 2018-10-26 0:00:00