Aminopyrimidines as Syk inhibitors

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The Merck Sharp & Dohme Corp. patent solves the following problem:

Spleen Tyrosine Kinase (SYK) is a protein tyrosine kinase described as a key mediator of immunoreceptor signaling a host of inflammatory cells including mast cells, B-cells, macrophages and neutrophils. These immunoreceptors, including Fc receptor and the B-cell receptor, is important for allergic diseases, and antibody-mediated autoimmune diseases and thus, pharmacologically interfering with SYK conceivably treat these diseases.

Our analysis of this patent is as follows:

Merck Sharp & Dohme Corp.’s patent US 9290490 B2 deals with Aminopyrimidines as Syk inhibitors.
The present invention provides new pyrimidine amines of formula I are potent inhibitor of spleen tyrosine kinase, and is useful in the treatment and prevention of diseases mediated by said enzyme, such as asthma, COPD, rheumatoid arthritis and cancer.

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