Patent Number: 6,255,303

Title: Phthalazinone PDE III/IV inhibitors

Abstract: The compounds of formula (I) in which R1, R2, R3, R4, R5, X and Y have the meanings as given in the description are novel effective bronchial therapeutica.

Inventors: Sterk; Geert Jan (Utrecht, NL), van der Mey; Margaretha (Rijnsburg, NL)

Assignee: Byk Gulden Lomberg Chemische Fabrik GmbH

International Classification: C07D 237/00 (20060101); C07D 237/32 (20060101); C07D 417/12 (20060101); C07D 417/00 (20060101); A61K 031/54 (); A61K 031/502 (); C07D 403/10 (); C07D 417/10 ()

Expiration Date: 07/03/2018