Phosphodiesterase inhibitors. Part 6: Design, synthesis, and structure–activity relationships of PDE4-inhibitory pyrazolo[1,5-a]pyridines with anti-inflammatory activity

Autor: Yuichi Yageta, Yasushi Kohno, Koji Ochiai, Satoshi Takita, Tatsunobu Sumiya, Akira Ohinata, Tokutaro Yasue, Akihiko Kojima, Kazuhiko Iwase, Tetsuya Kishi
Rok vydání: 2013
Předmět:
Zdroj: Bioorganic & Medicinal Chemistry Letters. 23:5311-5316
ISSN: 0960-894X
DOI: 10.1016/j.bmcl.2013.07.069
Popis: We previously identified KCA-1490 [(−)-6-(7-methoxy-2-trifluoromethyl-pyrazolo[1,5-a]pyridin-4-yl)-5-methyl-4,5-dihydro-3-(2H)-pyridazinone], a dual PDE3/4 inhibitor. In the present study, we found highly potent selective PDE4 inhibitors derived from the structure of KCA-1490. Among them, N-(3,5-dichloropyridin-4-yl)-7-methoxy-2-(trifluoromethyl)pyrazolo[1,5-a]pyridine-4-carboxamide (2a) had good anti-inflammatory effects in an animal model.
Databáze: OpenAIRE