Discovery of imidazopyridazines as potent Pim-1/2 kinase inhibitors
摘要:
High levels of Pim expression have been implicated in several hematopoietic and solid tumor cancers, suggesting that inhibition of Pim signaling could provide patients with therapeutic benefit. Herein, we describe our progress towards this goal using a screening hit (rac-1) as a starting point. Modification of the indazole ring resulted in the discovery of a series of imidazopyridazine-based Pim inhibitors exemplified by compound 22m, which was found to be a subnanomolar inhibitor of the Pim-1 and Pim-2 isoforms (IC50 values of 0.024 nM and 0.095 nM, respectively) and to potently inhibit the phosphorylation of BAD in a cell line that expresses high levels of all Pim isoforms, KMS-12-BM (IC50 = 28 nM). Profiling of Pim-1 and Pim-2 expression levels in a panel of multiple myeloma cell lines and correlation of these data with the potency of compound 22m in a proliferation assay suggests that Pim-2 inhibition would be advantageous for this indication. (C) 2016 Elsevier Ltd. All rights reserved.
[EN] ORGANIC COMPOUND AND APPLICATION THEREOF IN ORGANIC ELECTRONIC DEVICE, AND COMPOSITION<br/>[FR] COMPOSÉ ORGANIQUE, SON UTILISATION DANS UN DISPOSITIF ÉLECTRONIQUE ORGANIQUE ET COMPOSITION<br/>[ZH] 一种有机化合物、组合物及其在有机电子器件中的应用
Discovery of imidazopyridazines as potent Pim-1/2 kinase inhibitors
作者:Ryan P. Wurz、Christine Sastri、Derin C. D’Amico、Brad Herberich、Claire L.M. Jackson、Liping H. Pettus、Andrew S. Tasker、Bin Wu、Nadia Guerrero、J. Russell Lipford、Jeffrey T. Winston、Yajing Yang、Paul Wang、Yen Nguyen、Kristin L. Andrews、Xin Huang、Matthew R. Lee、Christopher Mohr、J.D. Zhang、Darren L. Reid、Yang Xu、Yihong Zhou、Hui-Ling Wang
DOI:10.1016/j.bmcl.2016.09.067
日期:2016.11
High levels of Pim expression have been implicated in several hematopoietic and solid tumor cancers, suggesting that inhibition of Pim signaling could provide patients with therapeutic benefit. Herein, we describe our progress towards this goal using a screening hit (rac-1) as a starting point. Modification of the indazole ring resulted in the discovery of a series of imidazopyridazine-based Pim inhibitors exemplified by compound 22m, which was found to be a subnanomolar inhibitor of the Pim-1 and Pim-2 isoforms (IC50 values of 0.024 nM and 0.095 nM, respectively) and to potently inhibit the phosphorylation of BAD in a cell line that expresses high levels of all Pim isoforms, KMS-12-BM (IC50 = 28 nM). Profiling of Pim-1 and Pim-2 expression levels in a panel of multiple myeloma cell lines and correlation of these data with the potency of compound 22m in a proliferation assay suggests that Pim-2 inhibition would be advantageous for this indication. (C) 2016 Elsevier Ltd. All rights reserved.