Phosphodiesterase inhibitors. Part 3: Design, synthesis and structure–activity relationships of dual PDE3/4-inhibitory fused bicyclic heteroaromatic-dihydropyridazinones with anti-inflammatory and bronchodilatory activity
Phosphodiesterase inhibitors. Part 3: Design, synthesis and structure–activity relationships of dual PDE3/4-inhibitory fused bicyclic heteroaromatic-dihydropyridazinones with anti-inflammatory and bronchodilatory activity
Phosphodiesterase inhibitors. Part 3: Design, synthesis and structure–activity relationships of dual PDE3/4-inhibitory fused bicyclic heteroaromatic-dihydropyridazinones with anti-inflammatory and bronchodilatory activity
作者:Koji Ochiai、Satoshi Takita、Tomohiko Eiraku、Akihiko Kojima、Kazuhiko Iwase、Tetsuya Kishi、Kazunori Fukuchi、Tokutaro Yasue、David R. Adams、Robert W. Allcock、Zhong Jiang、Yasushi Kohno
DOI:10.1016/j.bmc.2012.01.033
日期:2012.3
(-)-6-(7-Methoxy-2-trifluoromethylpyrazolo[1,5-a]pyridin-4-yl)-5-methyl-4,5-dihydro-3-(2H)-pyridazinone (KCA-1490) is a dual PDE3/4 inhibitor that exhibits potent combined bronchodilatory and anti-inflammatory activity. A survey of potential bicyclic heteroaromatic replacement subunits for the pyrazolo[1,5-a] pyridine core of KCA-1490 has identified the 4-methoxy-2-(trifluoromethyl)benzo[d] thiazol-7-yl and 8-methoxy-2-(trifluoromethyl)quinolin-5-yl analogues as dual PDE3/4-inhibitory compounds that potently suppress histamine-induced bronchoconstriction and exhibit anti-inflammatory activity in vivo. (C) 2012 Elsevier Ltd. All rights reserved.