- Structure-based optimization of oxadiazole-based GSK-3 inhibitors
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Inhibition of glycogen synthase kinase-3 (GSK-3) induces neuroprotective effects, e.g. decreases β-amyloid production and reduces tau hyperphosphorylation, which are both associated with Alzheimer's disease (AD). The two isoforms of GSK-3 in mammalians are GSK-3α and β, which share 98% homology in their catalytic domains. We investigated GSK-3 inhibitors based on 2 different scaffolds in order to elucidate the demands of the ATP-binding pocket [1]. Particularly, the oxadiazole scaffold provided potent and selective GSK-3 inhibitors. For example, the most potent inhibitor of the present series, the acetamide 26d, is characterized by an IC50 of 2 nM for GSK-3α and 17 nM for GSK-3β. In addition, the benzodioxane 8g showed up to 27-fold selectivity for GSK-3α over GSK-3β, with an IC 50 of 35 nM for GSK-3α. Two GSK-3 inhibitors were further profiled for efficacy and toxicity in the wild-type (wt) zebrafish embryo assay to evaluate simultaneously permeability and safety.
- Lo Monte, Fabio,Kramer, Thomas,Gu, Jiamin,Brodrecht, Martin,Pilakowski, Johannes,Fuertes, Ana,Dominguez, Juan Manuel,Plotkin, Batya,Eldar-Finkelman, Hagit,Schmidt, Boris
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- IMIDAZOPYRIDAZINECARBONITRILES USEFUL AS KINASE INHIBITORS
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The invention provides compounds of Formula (I) and pharmaceutically acceptable salts thereof. The Formula (I) imidazopyridazines inhibit protein kinase activity thereby making them useful as anticancer agents.
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Page/Page column 95
(2010/04/28)
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- Bicyclic fibrinogen antagonists
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This invention relates to compounds of the formulae: wherein A1is O, S, N—R1or CHR1; A4is N—R4or CHR4; R2is a sidechain containing an acid or ester group; R1, R4and R5are substituents such as H, alkyl and aryl alkyl, and R6is a sidechain containing a nitrogen group; and pharmaceutically acceptable salts thereof, which are effective for inhibiting platelet aggregation, pharmaceutical compositions for effecting such activity, and a method for inhibiting platelet aggregation.
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- Substituted 2-aminopyridines as inhibitors of nitric oxide synthase
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Substituted 2-aminopyridine compounds of Formula (I) and pharmaceutically acceptable salts which have been found useful in the treatment of nitric oxide synthase mediated diseases and disorders. STR1
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