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J Med Chem. 2011 Apr 14;54(7):2255-65. doi: 10.1021/jm101423y. Epub 2011 Mar 4.

Discovery of 6-(2,4-difluorophenoxy)-2-[3-hydroxy-1-(2-hydroxyethyl)propylamino]-8-methyl-8H-pyrido[2,3-d]pyrimidin-7-one (pamapimod) and 6-(2,4-difluorophenoxy)-8-methyl-2-(tetrahydro-2H-pyran-4-ylamino)pyrido[2,3-d]pyrimidin-7(8H)-one (R1487) as orally bioavailable and highly selective inhibitors of p38α mitogen-activated protein kinase.

Author information

  • 1Roche Palo Alto LLC, 3431 Hillview Avenue, Palo Alto, California 94304, United States. David-M.Goldstein@roche.com

Abstract

The development of a new series of p38α inhibitors resulted in the identification of two clinical candidates, one of which was advanced into a phase 2 clinical study for rheumatoid arthritis. The original lead, an lck inhibitor that also potently inhibited p38α, was a screening hit from our kinase inhibitor library. This manuscript describes the optimization of the lead to p38-selective examples with good pharmacokinetic properties.

PMID:
21375264
[PubMed - indexed for MEDLINE]
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