PYRAZOLO[3,4-b]PYRIDINE AND PYRROLO[2,3-b]PYRIDINE INHIBITORS OF BRUTON'S TYROSINE KINASE
申请人:Pharmacyclics LLC
公开号:US20180194762A1
公开(公告)日:2018-07-12
Disclosed are pyrazolo[3,4-b]pyridine and pyrrolo[2,3-b]pyridine inhibitors of Bruton's tyrosine kinase (Btk). Also disclosed are pharmaceutical compositions that include the compounds. Methods of using the Btk inhibitors are described, alone or in combination with other therapeutic agents, for the treatment of autoimmune diseases or conditions, heteroimmune diseases or conditions, cancer, including lymphoma, and inflammatory diseases or conditions.
A series of novelreversible Btk inhibitors has been designed based on the structure of the recently reported preclinical drug RN486. The synthesis and SAR of these compounds are described. Among these derivatives, compound 16b was identified to be a potent and orally available reversible agent with satisfactory Btk enzymatic and cellular inhibition in vitro, as well as favorable PK properties and
bearing imidazo [4,5-b]pyridine scaffolds. In contrast to expectations based on previous studies, the imidazo [4,5-c]pyridine inhibitor exhibited a significantly higher activity against BTK compared to its imidazo [4,5-b]pyridine isomer. An inherent SAR study in the series of imidazo [4,5-c]pyridine compounds revealed a remarkably high tolerance of C6 substitutions for both hydrophobic and hydrophilic
在本文中,我们报告了一种针对三取代咪唑并[4,5- c ]吡啶的有效合成方法,该吡啶被设计为布鲁顿酪氨酸激酶(BTK)的抑制剂。引入了两种可供选择的合成路线,用于简单制备所需化合物的N 1,C 4,C 6位置的可变取代基,以及易于获得的结构单元。此外,开发的合成方法对于带有咪唑并[4,5- b ]吡啶骨架的异构体化合物是可行的。在基于以往的研究对比期望,咪唑并[4,5- c ^ ]吡啶抑制剂显示出对BTK显著更高的活性相比,它的咪唑并[4,5- b]吡啶异构体。一系列咪唑并[4,5- c ]吡啶化合物的固有SAR研究表明,对于疏水和亲水取代基,C 6取代均具有极高的耐受性。初步的细胞实验表明在Burkitt淋巴瘤和套细胞淋巴瘤细胞系中有选择性的BTK靶向。因此,这些抑制剂可以作为进一步开发的起点,最终导致可以在依鲁替尼治疗失败后使用的BTK抑制剂。
Design and synthesis of novel pyrimidine analogs as highly selective, non-covalent BTK inhibitors
作者:Wataru Kawahata、Tokiko Asami、Takayuki Irie、Masaaki Sawa
DOI:10.1016/j.bmcl.2017.11.037
日期:2018.1
promising target for the treatment of multiple diseases such as B cell malignances, asthma, and rheumatoidarthritis. Here, we report the discovery of a series of novel pyrimidine analogs as potent, highlyselective, non-covalent inhibitors of BTK. Compound 25d demonstrated higher affinity to an unactivated conformation of BTK that resulted in an excellent kinase selectivity. Compound 25d showed a good