Fibroblast growth factor receptors (FGFRs) are important targets for cancer therapy. Herein, we describe the design, synthesis, and biological evaluation of a novel series of 1H-pyrazolo[3,4-b]pyridine derivatives as potent and selective FGFR kinase inhibitors. On the basis of its excellent in vitro potency and favorable pharmacokinetic properties, compound 7n was selected for in vivo evaluation and showed significant antitumor activity in a FGFR1-driven H1581 xenograft model. These results indicated that 7n would be a promising candidate for further drug development.

中文翻译：

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发现取代的1 H-吡唑并[3,4- b ]吡啶衍生物作为强效和选择性FGFR激酶抑制剂

成纤维细胞生长因子受体（FGFRs）是癌症治疗的重要靶标。在这里，我们描述了作为有效和选择性FGFR激酶抑制剂的一系列新型1 H-吡唑并[3,4- b ]吡啶衍生物的设计，合成和生物学评估。基于其出色的体外效能和良好的药代动力学特性，选择了化合物7n进行体内评估，并在FGFR1驱动的H1581异种移植模型中显示出显着的抗肿瘤活性。这些结果表明7n将是进一步药物开发的有希望的候选者。