1-[4-amino-7-bromo-2-(ethoxymethyl)-1H-imidazo[4,5-c][1,5]naphthyridin-1-yl]-2-methylpropan-2-ol 、 Tert-butyl 2-({7-bromo-3-[(ethoxyacetyl)amino][1,5]naphthyridin-4-yl}amino)-1,1-dimethylethylcarbamate 、
potassium carbonate 在
乙醇 、
二氯甲烷 作用下,
以to provide 51 g of tert-butyl {2-[7-bromo-2-(ethoxymethyl)-1H-imidazo[4,5-c][1,5]naphthyridin-1-yl]-1,1-dimethylethyl}carbamate as a yellowish brown solid的产率得到tert-butyl {2-[7-bromo-2-(ethoxymethyl)-1H-imidazo[4,5-c][1,5]naphthyridin-1-yl]-1,1-dimethylethyl}carbamate