• Li Tan, Tyzoon Nomanbhoy, Deepak Gurbani, Matthew Patricelli, John Hunter, Jiefei Geng, Lina Herhaus, Jianming Zhang, Eduardo Pauls, Youngjin Ham, Hwan Geun Choi, Ting Xie, Xianming Deng, Sara J Buhrlage, Taebo Sim, Philip Cohen, Gopal Sapkota, Kenneth D Westover, and Nathanael S Gray.
• Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, United States.
• J. Med. Chem. 2015 Jan 8; 58 (1): 183-96.

AbstractWe developed a pharmacophore model for type II inhibitors that was used to guide the construction of a library of kinase inhibitors. Kinome-wide selectivity profiling of the library resulted in the identification of a series of 4-substituted 1H-pyrrolo[2,3-b]pyridines that exhibited potent inhibitory activity against two mitogen-activated protein kinases (MAPKs), TAK1 (MAP3K7) and MAP4K2, as well as pharmacologically well interrogated kinases such as p38α (MAPK14) and ABL. Further investigation of the structure-activity relationship (SAR) resulted in the identification of potent dual TAK1 and MAP4K2 inhibitors such as 1 (NG25) and 2 as well as MAP4K2 selective inhibitors such as 16 and 17. Some of these inhibitors possess good pharmacokinetic properties that will enable their use in pharmacological studies in vivo. A 2.4 Å cocrystal structure of TAK1 in complex with 1 confirms that the activation loop of TAK1 assumes the DFG-out conformation characteristic of type II inhibitors.

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