Abstract
Constitutive activation of the EPO/JAK2 signaling cascade has recently been implicated in a variety of myeloproliferative disorders including polycythemia vera, essential thrombocythemia and myelofibrosis. In an effort to uncover therapeutic potential of blocking the EPO/JAK2 signaling cascade, we sought to discover selective inhibitors that block the kinase activity of JAK2. Herein, we describe the discovery and structure based optimization of a novel series of 2-amino-pyrazolo[1,5-a]pyrimidines that exhibit potent inhibition of JAK2.
MeSH terms
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Crystallography, X-Ray
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Drug Discovery
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Janus Kinase 2 / antagonists & inhibitors*
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Models, Molecular
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Molecular Structure
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Protein Kinase Inhibitors / chemical synthesis
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Protein Kinase Inhibitors / chemistry
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Protein Kinase Inhibitors / pharmacology*
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Pyrazoles / chemical synthesis
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Pyrazoles / chemistry
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Pyrazoles / pharmacology*
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Pyrimidines / chemical synthesis
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Pyrimidines / chemistry
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Pyrimidines / pharmacology*
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Signal Transduction / drug effects
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Stereoisomerism
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Structure-Activity Relationship
Substances
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Protein Kinase Inhibitors
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Pyrazoles
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Pyrimidines
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Janus Kinase 2