N-Arylrolipram derivatives as potent and selective PDE4 inhibitors

N-Arylrolipram derivatives as potent and selective PDE4 inhibitors Synthesis and structure–activity relationships of 4-oxo-1-phenyl-3,4,6,7-tetrahydro-[1,4]diazepino[6,7,1- hi ]indoles: novel PDE4 inhibitors 8-Methoxyquinoline-5-carboxamides as PDE4 inhibitors: a potential treatment for asthma Synthesis and biological activities of 1-pyridylisoquinoline and 1-pyridyldihydroisoquinoline derivatives as PDE4 inhibitors Selective Type IV Phosphodiesterase Inhibitors as Antiasthmatic Agents. The Syntheses and Biological Activities of 3-(Cyclopentyloxy)-4-methoxybenzamides and Analogs The selective inhibition of phosphodiesterase IV by benzopyran derivatives of rolipram Phthalazine PDE4 inhibitors. Part 2: The synthesis and biological evaluation of 6-methoxy-1,4-disubstituted derivatives Design, synthesis and in vitro PDE4 inhibition activity of certain quinazolinone derivatives for treatment of asthma Aryl sulfonamides as selective PDE4 inhibitors Phthalazine PDE4 inhibitors. Part 3: The synthesis and in vitro evaluation of derivatives with a hydrogen bond acceptor