A Scaffold-Hopping Strategy toward the Identification of Inhibitors of Cyclin?G Associated Kinase |
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Authors: | Randy Wouters Dr Junjun Tian Prof Piet Herdewijn Dr Steven De?Jonghe |
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Affiliation: | Medicinal Chemistry, Rega Institute for Medical Research, KU Leuven, Herestraat 49, Box 1041, 3000 Leuven, Belgium |
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Abstract: | We recently reported the discovery of isothiazolo4,3-b]pyridine-based inhibitors of cyclin G associated kinase (GAK) displaying low nanomolar binding affinity for GAK and demonstrating broad-spectrum antiviral activity. To come up with novel core structures that act as GAK inhibitors, a scaffold-hopping approach was applied starting from two different isothiazolo4,3-b]pyridines. In total, 13 novel 5,6- and 6,6-fused bicyclic heteroaromatic scaffolds were synthesized. Four of them displayed GAK affinity with Kd values in the low micromolar range that can serve as chemical starting points for the discovery of GAK inhibitors based on a different scaffold. |
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Keywords: | cyclin G associated kinase isothiazolo[4 3-b]pyridines medicinal chemistry nitrogen heterocycles scaffold hopping |
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