Discovery of 4-aminopyrimidine analogs as highly potent dual P70S6K/Akt inhibitors
作者:Yufang Xiao、Bayard R. Huck、Ruoxi Lan、Lizbeth DeSelm、Xiaoling Chen、Hui Qiu、Constantin Neagu、Theresa Johnson、Igor Mochalkin、Anna Gardberg、Xuliang Jiang、Hui Tian、Vikram Dutt、Dusica Santos、Jared Head、Jennifer Jackson、Sakeena Syed、Jing Lin、Erik Wilker、Jianguo Ma、Anderson Clark、Andreas Machl、Donald Bankston、Christopher C.V. Jones、Andreas Goutopoulos、Brian Sherer
DOI:10.1016/j.bmcl.2021.128352
日期:2021.10
PI3K/Akt/mTOR kinase pathway is associated with human cancers. A dual p70S6K/Akt inhibitor is sufficient to inhibit strong tumor growth and to block negative impact of the compensatory Akt feedback loop activation. A scaffold docking strategy based on an existing quinazoline carboxamide series identified 4-aminopyrimidine analog 6, which showed a single-digit nanomolar and a micromolar potencies in p70S6K
PI3K/Akt/mTOR 激酶通路的激活与人类癌症有关。双重 p70S6K/Akt 抑制剂足以抑制强烈的肿瘤生长并阻止补偿性 Akt 反馈回路激活的负面影响。基于现有喹唑啉甲酰胺系列的支架对接策略确定了 4-氨基嘧啶类似物6,其在 p70S6K 和 Akt 酶测定中显示出个位数的纳摩尔和微摩尔效力。SAR 优化提高了 Akt 酶和 p70S6K 细胞的效力,降低了 hERG 的敏感性,并最终发现了有希望的候选者37,它在 p70S6K 和 Akt 生化分析中都表现出个位数的纳摩尔值,以及 hERG 活性(IC 50 = 17.4 微米)。该药物在抑制小鼠乳腺癌肿瘤生长方面表现出剂量依赖性功效,并且在 200 mg/kg po 的剂量下长达 24 小时覆盖超过 90% 的 pS6 抑制。