Novel pyrazolopyridine-4-yl pyridazinone derivatives serve as phosphodiesterase inhibitors and are useful compounds for use in pharmaceutical products. Specifically, the compounds of the present invention are pyrazolopyridine-4-yl pyridazinone derivatives represented by the following general formula (1): (Example: 6-(2-ethyl-7-methoxy-pyrazolo[1,5-a]pyridine-4-yl)-5-methyl-4, 5-dihydro-3(2H)-pyridazinone).
|IPC||A61K31/501; A61P11/06; A61P25/24; A61P29/00; A61P33/08; C07D401/14; C07D403/14|
|Publication status||Published - 27 Jul 2010|
Kohno, Y., Adams, D., & Ando, N. (2010). IPC No. A61K31/501; A61P11/06; A61P25/24; A61P29/00; A61P33/08; C07D401/14; C07D403/14. Pyrazolopyridine-4-Yl Pyridazinone Derivatives and Addition Salts Thereof, and PDE Inhibitors Comprising the Same Derivatives or Salts as Active Ingredient. (Patent No. US7763617(B2)).