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Optimization of Potent ATAD2 and CECR2 Bromodomain Inhibitors with an Atypical Binding Mode
Most bromodomain inhibitors mimic the interactions of the natural acetylated lysine (KAc) histone substrate through key interactions with conserved asparagine and tyrosine residues within the binding pocket. Herein we report the optimization of a series of phenyl sulfonamides that exhibit a novel mo...
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Published in: | Journal of medicinal chemistry 2020-05, Vol.63 (10), p.5212-5241 |
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Main Authors: | , , , , , , , , , , , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Most bromodomain inhibitors mimic the interactions of the natural acetylated lysine (KAc) histone substrate through key interactions with conserved asparagine and tyrosine residues within the binding pocket. Herein we report the optimization of a series of phenyl sulfonamides that exhibit a novel mode of binding to non-bromodomain and extra terminal domain (non-BET) bromodomains through displacement of a normally conserved network of four water molecules. Starting from an initial hit molecule, we report its divergent optimization toward the ATPase family AAA domain containing 2 (ATAD2) and cat eye syndrome chromosome region, candidate 2 (CECR2) domains. This work concludes with the identification of ( R )-55 (GSK232), a highly selective, cellularly penetrant CECR2 inhibitor with excellent physicochemical properties. |
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ISSN: | 0022-2623 1520-4804 |
DOI: | 10.1021/acs.jmedchem.0c00021 |