Discovery of 5-(arenethynyl) hetero-monocyclic derivatives as potent inhibitors of BCR–ABL including the T315I gatekeeper mutant
摘要:
Ponatinib (AP24534) was previously identified as a pan-BCR-ABL inhibitor that potently inhibits the T315I gatekeeper mutant, and has advanced into clinical development for the treatment of refractory or resistant CML. In this study, we explored a novel series of five and six membered monocycles as alternate hinge-binding templates to replace the 6,5-fused imidazopyridazine core of ponatinib. Like ponatinib, these monocycles are tethered to pendant toluanilides via an ethynyl linker. Several compounds in this series displayed excellent in vitro potency against both native BCR-ABL and the T315I mutant. Notably, a subset of inhibitors exhibited desirable PK and were orally active in a mouse model of T315I-driven CML. (C) 2011 Elsevier Ltd. All rights reserved.
Discovery of 5-(arenethynyl) hetero-monocyclic derivatives as potent inhibitors of BCR–ABL including the T315I gatekeeper mutant
作者:Mathew Thomas、Wei-Sheng Huang、David Wen、Xiaotian Zhu、Yihan Wang、Chester A. Metcalf、Shuangying Liu、Ingrid Chen、Jan Romero、Dong Zou、Raji Sundaramoorthi、Feng Li、Jiwei Qi、Lisi Cai、Tianjun Zhou、Lois Commodore、Qihong Xu、Jeff Keats、Frank Wang、Scott Wardwell、Yaoyu Ning、Joseph T. Snodgrass、Marc I. Broudy、Karin Russian、John Iuliucci、Victor M. Rivera、Tomi K. Sawyer、David C. Dalgarno、Tim Clackson、William C. Shakespeare
DOI:10.1016/j.bmcl.2011.04.060
日期:2011.6
Ponatinib (AP24534) was previously identified as a pan-BCR-ABL inhibitor that potently inhibits the T315I gatekeeper mutant, and has advanced into clinical development for the treatment of refractory or resistant CML. In this study, we explored a novel series of five and six membered monocycles as alternate hinge-binding templates to replace the 6,5-fused imidazopyridazine core of ponatinib. Like ponatinib, these monocycles are tethered to pendant toluanilides via an ethynyl linker. Several compounds in this series displayed excellent in vitro potency against both native BCR-ABL and the T315I mutant. Notably, a subset of inhibitors exhibited desirable PK and were orally active in a mouse model of T315I-driven CML. (C) 2011 Elsevier Ltd. All rights reserved.
Structure-Based Discovery and Optimization of Furo[3,2-<i>c</i>]pyridin-4(5<i>H</i>)-one Derivatives as Potent and Second Bromodomain (BD2)-Selective Bromo and Extra Terminal Domain (BET) Inhibitors
selectivity over BRD4 BD1. Besides, 8l exhibited 6-fold BRD4BD2 domain selectivity over other BET BD2 domains. Compound 8l displayed potent antiproliferative activity against multiple tumor cell lines, especially MV4-11 (IC50 = 0.55 nM), while showing weak cytotoxicity against the normal lung fibroblast cell line. It highlights the safety profile of this series of BD2inhibitors. 8l also demonstrated
泛溴结构域和额外末端 (Pan-BET) 抑制剂显示出深远的疗效,但在临床试验中表现出药理学驱动的毒性。迫切需要开发域选择性 BET 抑制剂来区分疗效和毒性。在此,我们报告了一系列作为新型 BD2 选择性 BET 抑制剂的 furo[3,2 - c ]pyridin-4(5 H )-one 衍生物。代表性化合物8l (XY153) 与 BRD4 BD2 有效结合,半数最大抑制浓度 (IC 50 ) 值为 0.79 nM,并显示出比 BRD4 BD1 高 354 倍的选择性。此外,8l表现出比其他 BET BD2 结构域高 6 倍的 BRD4 BD2 结构域选择性。化合物8l对多种肿瘤细胞系显示出有效的抗增殖活性,尤其是 MV4-11 (IC 50 = 0.55 nM),同时对正常肺成纤维细胞系显示出较弱的细胞毒性。它突出了这一系列 BD2 抑制剂的安全性。8l还表现出良好的体外代谢稳定性。