Pyrano-[2,3b]-pyridines as potassium channel antagonists
2008
Abstract The design and synthesis of a series of highly functionalized pyrano-[2,3 b ]-pyridines is described. These compounds were assayed for their ability to block the I Kur channel encoded by the gene hKV1.5 in patch-clamped L-929 cells. Six of the compounds in this series showed sub-micromolar activity, the most potent being 4-(4-ethyl-benzenesulfonylamino)-3-hydroxy-2,2-dimethyl-3,4-dihydro-2H-pyrano[2,3 b ]-pyridine-6-carboxylic acid ethyl-phenyl-amide with an IC 50 of 378 nM.
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