4 research outputs found

    [3<i>a</i>,4]-Dihydropyrazolo[1,5<i>a</i>]pyrimidines: Novel, Potent, and Selective Phosphatidylinositol-3-kinase β Inhibitors

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    A series of novel [3<i>a</i>,4]­dihydropyrazolo­[1,5<i>a</i>]­pyrimidines were identified, which were highly potent and selective inhibitors of PI3Kβ. The template afforded the opportunity to develop novel SAR for both the hinge-binding (R<sub>3</sub>) and back-pocket (R<sub>4</sub>) substitutents. While cellular potency was relatively modest due to high protein binding, the series displayed low clearance in rat, mouse, and monkey

    Rational Design, Synthesis, and SAR of a Novel Thiazolopyrimidinone Series of Selective PI3K-beta Inhibitors

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    A novel thiazolopyrimidinone series of PI3K-beta selective inhibitors has been identified. This chemotype has provided an excellent tool compound, <b>18</b>, that showed potent growth inhibition in the PTEN-deficient breast cancer cell line MDA-MB-468 under anchorage-independent conditions, and it also demonstrated pharmacodynamic effects and efficacy in a PTEN-deficient prostate cancer PC-3 xenograft mouse model

    Discovery of a Novel 2,6-Disubstituted Glucosamine Series of Potent and Selective Hexokinase 2 Inhibitors

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    A novel series of potent and selective hexokinase 2 (HK2) inhibitors, 2,6-disubstituted glucosamines, has been identified based on HTS hits, exemplified by compound <b>1</b>. Inhibitor-bound crystal structures revealed that the HK2 enzyme could adopt an “induced-fit” conformation. The SAR study led to the identification of potent HK2 inhibitors, such as compound <b>34</b> with greater than 100-fold selectivity over HK1. Compound <b>25</b> inhibits <i>in situ</i> glycolysis in a UM-UC-3 bladder tumor cell line via <sup>13</sup>CNMR measurement of [3-<sup>13</sup>C]­lactate produced from [1,6-<sup>13</sup>C<sub>2</sub>]­glucose added to the cell culture

    Discovery of a Novel 2,6-Disubstituted Glucosamine Series of Potent and Selective Hexokinase 2 Inhibitors

    No full text
    A novel series of potent and selective hexokinase 2 (HK2) inhibitors, 2,6-disubstituted glucosamines, has been identified based on HTS hits, exemplified by compound <b>1</b>. Inhibitor-bound crystal structures revealed that the HK2 enzyme could adopt an “induced-fit” conformation. The SAR study led to the identification of potent HK2 inhibitors, such as compound <b>34</b> with greater than 100-fold selectivity over HK1. Compound <b>25</b> inhibits <i>in situ</i> glycolysis in a UM-UC-3 bladder tumor cell line via <sup>13</sup>CNMR measurement of [3-<sup>13</sup>C]­lactate produced from [1,6-<sup>13</sup>C<sub>2</sub>]­glucose added to the cell culture
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