Potency switch between CHK1 and MK2: Discovery of imidazo[1,2-a]pyrazine- and imidazo[1,2-c]pyrimidine-based kinase inhibitors

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Abstract

Chemistry has been developed to access both imidazo[1,2-a]pyrazines and imidazo[1,2-c]pyrimidines. Small structural modifications in both series led to a switch of potency between two kinases involved in mediating cell cycle checkpoint control, CHK1 and MK2.

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Acknowledgments

We thank Drs. John Piwinski and Neng-Yang Shih for support of this work.

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Present address: Millennium: The Takeda Oncology Company, Cambridge, MA 02139, USA.

Present address: EnVivo Pharma Inc., Watertown, MA 02472, USA.

§

Present address: Paraza Pharma Inc., Laval, Quebec, Canada, H7V 5B7.

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