Efficient and Scalable Synthesis
of 3,5,7-Trisubstituted 1<i>H</i>-Indazoles
as Potent IKK2 Inhibitors
作者:Xichen Lin、Jakob Busch-Petersen、Jianghe Deng、Christine Edwards、Zhaoguo Zhang、Jeffrey Kerns
DOI:10.1055/s-0028-1087364
日期:——
Efficient and scalable chemical approaches to 3,5,7-trisubstituted 1H-indazoles were developed and applied to the synthesis of 1,1-dimethylethyl 4-[7-(aminocarbonyl)-5-bromo-1H-indazol-3-yl]-1-piperidinecarboxylate, a key intermediate for 3,5,7-trisubstituted 1H-indazole, which was identified as a potent IKK2 inhibitor. The sequence allows for a scalable preparation of the target compound in eight steps and proceeds in 40% overall yield from readily available starting material.
我们开发了 3,5,7-三取代 1H-吲唑的高效和可扩展的化学方法,并将其应用于 4-[7-(氨基甲酰基)-5-溴-1H-吲唑-3-基]-1-哌啶羧酸 1,1-二甲基乙酯的合成,该化合物是 3,5,7-三取代 1H-吲唑的关键中间体,被鉴定为一种强效 IKK2 抑制剂。该序列可通过八个步骤规模化地制备目标化合物,并能从容易获得的起始原料中以 40% 的总收率进行制备。