Journal
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
Volume 17, Issue 10, Pages 2863-2868Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmcl.2007.02.059
Keywords
protein kinase; inhibition; macrocycle; heterophane; bis(indolyl)maleimide; [2+2+2] cycloaddition; cobalt(1)
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Novel bis(indolyl)maleimide pyridinophanes 3, 9a, 9b, 10a, 10b, and 11 were prepared by cobalt-mediated [2+2+2] cycloaddition of an appropriate alpha,omega-diyne with an N,N-dialkylcyanamide. These macrocyclic heterophanes were found to be potent, selective inhibitors of glycogen synthase kinase-3 beta. An X-ray structure of a co-crystal of GSK-3 beta and 3 (IC50 = 3 nM) depicts the hydrogen bonding and hydrophobic interactions in the ATP-binding pocket of this serine/threonine protein kinase. (c) 2007 Elsevier Ltd. All rights reserved.
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