JOURNAL ARTICLE

Oxopyrido[2,3-d]pyrimidines as Covalent L858R/T790M Mutant Selective Epidermal Growth Factor Receptor (EGFR) Inhibitors

Ryan P Wurz, Liping H Pettus, Kate Ashton, James Brown, Jian Jeffrey Chen, Brad Herberich, Fang-Tsao Hong, Essa Hu-Harrington, Tom Nguyen, David J St Jean, Seifu Tadesse, David Bauer, Michele Kubryk, Jinghui Zhan, Keegan Cooke, Petia Mitchell, Kristin L Andrews, Faye Hsieh, Dean Hickman, Nataraj Kalyanaraman, Tian Wu, Darren L Reid, Edward K Lobenhofer, Dina A Andrews, Nancy Everds, Roberto Guzman, Andrew T Parsons, Simon J Hedley, Jason Tedrow, Oliver R Thiel, Matthew Potter, Robert Radinsky, Pedro J Beltran, Andrew S Tasker
ACS Medicinal Chemistry Letters 2015 September 10, 6 (9): 987-92
26396685
In nonsmall cell lung cancer (NSCLC), the threonine(790)-methionine(790) (T790M) point mutation of EGFR kinase is one of the leading causes of acquired resistance to the first generation tyrosine kinase inhibitors (TKIs), such as gefitinib and erlotinib. Herein, we describe the optimization of a series of 7-oxopyrido[2,3-d]pyrimidinyl-derived irreversible inhibitors of EGFR kinase. This led to the discovery of compound 24 which potently inhibits gefitinib-resistant EGFR(L858R,T790M) with 100-fold selectivity over wild-type EGFR. Compound 24 displays strong antiproliferative activity against the H1975 nonsmall cell lung cancer cell line, the first line mutant HCC827 cell line, and promising antitumor activity in an EGFR(L858R,T790M) driven H1975 xenograft model sparing the side effects associated with the inhibition of wild-type EGFR.

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