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Informa UK Limited Journal of Enzyme Inhibition and Medicinal Chemistry 38(1)
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    초록·키워드

    BCR-ABL inhibition is an effective therapeutic approach for the treatment of chronic myeloid leukaemia (CML). Herein, we report the discovery of <b>AKE-72 (5)</b>, a diarylamide 3-aminoindazole, as a potent pan-BCR-ABL inhibitor, including the imatinib-resistant mutant T315I. A focussed array of compounds <b>4a</b>, <b>4b</b>, and <b>5</b> has been designed based on our previously reported indazole <b>I</b> to improve its BCR-ABL<sup>T315I</sup> inhibitory activity. Replacing the morpholine moiety of <b>I</b> with the privileged tail (4-ethylpiperazin-1-yl)methyl afforded <b>5 (AKE-72)</b> with IC<sub>50</sub> values of < 0.5 nM, and 9 nM against BCR-ABL<sup>WT</sup> and BCR-ABL<sup>T315I</sup>, respectively. Moreover, <b>AKE-72</b> potently inhibited a panel of other clinically important mutants in single-digit nanomolar IC<sub>50</sub> values. <b>AKE-72</b> elicited remarkable anti-leukemic activity against K-562 cell line (GI<sub>50</sub> < 10 nM, TGI = 154 nM). In addition, <b>AKE-72</b> strongly inhibited the proliferation of Ba/F3 cells expressing native BCR-ABL or its T315I mutant. Overall, <b>AKE-72</b> may serve as a promising candidate for the treatment of CML, including those harbouring T315I mutation.

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