A series of N-benzyl-N-hydroxy-3-(cyclopentyloxy)-4-methoxybenzene carboxamide analogues have been investigated as PDE4 inhibitors. Two compounds, 3- carboxylic (12b) and 3-hydroxamic acid (13b) derivatives, have shown potent inhibition toward PDE4, with IC50s of 0.114 and 0.047 μM, respectively. Docking of the compound 13b into the binding pocket of the PDE4 catalytic domain revealed interactions corresponding to those of the cAMP substrate.
Keywords: cyclopentyloxy, methoxybenzene, N-benzyl-N-hydroxy, 3-hydroxamic acid
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