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  • Title: Optimization of novel reversible Bruton's tyrosine kinase inhibitors identified using Tethering-fragment-based screens.
    Author: Hopkins BT, Bame E, Bell N, Bohnert T, Bowden-Verhoek JK, Bui M, Cancilla MT, Conlon P, Cullen P, Erlanson DA, Fan J, Fuchs-Knotts T, Hansen S, Heumann S, Jenkins TJ, Marcotte D, McDowell B, Mertsching E, Negrou E, Otipoby KL, Poreci U, Romanowski MJ, Scott D, Silvian L, Yang W, Zhong M.
    Journal: Bioorg Med Chem; 2019 Jul 01; 27(13):2905-2913. PubMed ID: 31138459.
    Abstract:
    Since the approval of ibrutinib for the treatment of B-cell malignancies in 2012, numerous clinical trials have been reported using covalent inhibitors to target Bruton's tyrosine kinase (BTK) for oncology indications. However, a formidable challenge for the pharmaceutical industry has been the identification of reversible, selective, potent molecules for inhibition of BTK. Herein, we report application of Tethering-fragment-based screens to identify low molecular weight fragments which were further optimized to improve on-target potency and ADME properties leading to the discovery of reversible, selective, potent BTK inhibitors suitable for pre-clinical proof-of-concept studies.
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