Abstract
Based on our results regarding the structure-activity relationships of alkylxanthines and imidazo[2,1-i]purines as phosphodiesterase 4 (PDE4) inhibitors, we designed new 1-benzylxanthines and investigated their PDE4 inhibitory activities. 3,7-Dihydro-7-acetonyl-1-(2,4-dichlorobenzyl)-3-propyl-1H-purine-2,4-dione (2h) exhibited both more selective and more potent PDE4 inhibitory activity than rolipram and XT-611.
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