Efforts toward the process development of reversible Bruton’s tyrosine kinase (BTK) inhibitor GDC-0853 (1) are described. A practical synthesis of GDC-0853 was accomplished via a key highly regioselective Pd-catalyzed C–N coupling of tricyclic lactam 5 with 2,4-dichloronicotinaldehyde (6) to afford the C–N coupling product 3, a Suzuki–Miyaura cross-coupling of intermediate 3 with boronic ester 4 derived from a Pd-catalyzed borylation of tetracyclic bromide 7, to generate penultimate aldehyde intermediate 2 and subsequent aldehyde reduction and recrystallization. Process development of starting materials 5, 6, and 7 is also discussed.

中文翻译：

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开发可逆的布鲁顿酪氨酸激酶抑制剂GDC-0853的高效生产工艺

描述了对可逆布鲁顿酪氨酸激酶（BTK）抑制剂GDC-0853（1）的开发过程的努力。通过关键的高区域选择性Pd催化的三环内酰胺5与2,4-二氯烟碱醛（6）的C-N偶联，完成了GDC-0853的实际合成，从而得到了C-N偶联产物3，即Suzuki-Miyaura交联。将中间体3与衍生自四环溴化物7的Pd催化硼化的硼酸酯4偶联，生成倒数第二的醛中间体2，然后进行醛还原和重结晶。起始原料的工艺开发5，6和7也进行了讨论。