Phosphodiesterase inhibitors. Part 2: Design, synthesis, and structure–activity relationships of dual PDE3/4-inhibitory pyrazolo[1,5-a]pyridines with anti-inflammatory and bronchodilatory activity

Autor: Koji Ochiai, David R. Adams, Hitomi Zushi, Naoki Ando, Tokutaro Yasue, Kazuhiko Iwase, Akira Ohinata, Yasushi Kohno, Tetsuya Kishi, Kazunori Fukuchi
Rok vydání: 2011
Předmět:
Zdroj: Bioorganic & Medicinal Chemistry Letters. 21:5451-5456
ISSN: 0960-894X
DOI: 10.1016/j.bmcl.2011.06.118
Popis: A structural survey of pyrazolopyridine-pyridazinone phosphodiesterase (PDE) inhibitors was made with a view to optimization of their dual PDE3/4-inhibitory activity for respiratory disease applications. These studies identified (−)-6-(7-methoxy-2-trifluoromethylpyrazolo[1,5-a]pyridine-4-yl)-5-methyl-4,5-dihydro-3-(2H)-pyridazinone (KCA-1490, compound 2ac) as a compound with potent combined bronchodilatory and anti-inflammatory activity and an improved therapeutic window over roflumilast.
Databáze: OpenAIRE