Journal
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
Volume 17, Issue 5, Pages 1296-1301Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmcl.2006.12.003
Keywords
kinase; inhibitor; JNK; JNK3; MAPK; selective
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The identification and exploration of a novel, potent and selective series of N-(3-cyano-4,5,6,7-tetrahydro-1-benzothien2-yl)amide inhibitors of JNK2 and JNK3 kinases is described. Compounds 5a and 11a were identified as potent inhibitors of JNK3 (pIC(50) 6.7 and 6.6, respectively), with essentially equal potency against JNK2 (pIC(50) 6.5). Selectivity within the mitogen-activated protein kinase (MAPK) family, against JNK1, p38 alpha and ERK2, was observed for the series. X-ray crystallography of 5e and 8a in JNK3 revealed a unique binding mode, with the 3-cyano substituent forming an H-bond acceptor interaction with the hinge region of the ATP-binding site. (c) 2006 Elsevier Ltd. All rights reserved.
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