tert-butyl 1-(4-(5-(tert-butoxycarbonyl-amino)-2-bromothiazole-4-carboxamido)-1-methyl-1H-pyrazol-5-yl)-6,6-difluoroazepan-4-ylcarbamate 、
3,5-二氟-4-(三丁基锡烷基)吡啶 以gave 438 as a white solid (68 mg, 43% over two steps)的产率得到5-amino-N-[5-(5-amino-3,3-difluoro-azepan-1-yl)-1-methyl-pyrazol-4-yl]-2-(3,5-difluoro-4-pyridyl)thiazole-4-carboxamide