Selective Covalent Targeting of Mutated EGFR(T790M) with Chlorofluoroacetamide-Pyrimidines
摘要:
Covalent modification of disease-associated proteins with small molecules is a powerful approach for achieving an increased and sustained pharmacological effect. To reduce the potential risk of nonselective covalent modification, molecular design of covalent inhibitors is critically important. We report herein the development of a targeted covalent inhibitor for mutated epidermal growth factor receptor (EGFR) (L858R/T790M) using alpha-chlorofluoroacetamide (CFA) as the reactive group. The chemically tuned weak reactivity of CFA was suitable for the design of third-generation EGFR inhibitors that possess the pyrimidine scaffold. The structure-activity relationship study revealed that CFA inhibitor 18 (NSP-037) possessed higher inhibition selectivity to the mutated EGFR over wild-type EGFR when compared to clinically approved osimertinib. Mass-based chemical proteomics analyses further revealed that 18 displayed high covalent modification selectivity for the mutated EGFR in living cells. These findings highlight the utility of CFA as a warhead of targeted covalent inhibitors and the potential application of the CFA-pyrimidines for treatment of non-small-cell lung cancer.
Structural modifications on indole and pyrimidine rings of osimertinib lead to high selectivity towards L858R/T790M double mutant enzyme and potent antitumor activity
作者:Qiao Liu、Yanli Luo、Zerui Li、Chen Chen、Lei Fang
DOI:10.1016/j.bmc.2021.116094
日期:2021.4
high selectivity towards double mutant EGFR and potent antitumor activity. Particularly, compound 6b-1, the most active compound, exhibited excellent inhibitory activity against double mutant EGFR (IC50 = 0.18 nM) and wild-type EGFR (IC50 = 2.89 nM) as well as H1975 cells (IC50 = 1.44 nM). Western blot analysis showed that 6b-1 completely inhibited double mutant EGFR and Erk phosphorylation. In vivo test
The present invention relates to compounds of Formula (I) and/or Formula (Ia):
and to their salts, pharmaceutical compositions, methods of use, and methods for their preparation. These compounds inhibit ALK kinase activity, and thus may be used for the treatment of cancer.
The present invention relates to compounds of Formula (I) and/or Formula (Ia):
and to their salts, pharmaceutical compositions, methods of use, and methods for their preparation. These compounds inhibit ALK kinase activity, and thus may be used for the treatment of cancer.