摘要:
The design, synthesis and biological evaluation of a series of azabenzimidazole derivatives as TBK1/IKK epsilon kinase inhibitors are described. Starting from a lead compound 1a, iterative design and SAR exploitation of the scaffold led to analogues with nM enzyme potencies against TBK1/IKK epsilon. These compounds also exhibited excellent cellular activity against TBK1. Further structure-based design to improve selectivity over CDK2 and Aurora B resulted in compounds such as 5b-e. These probe compounds will facilitate study of the complex cancer biology of TBK1 and IKK epsilon. (C) 2012 Elsevier Ltd. All rights reserved.