The title compound (2.12 g, 4.84 mmol) was prepared in three steps from 2-nitrobenzenesulfonyl chloride (1.11 g, 5.0 mmol), tert-butyl(5-amino-2-methoxypyridin-3-yl)methylcarbamate (IntA34) (1.39 g, 5.5 mmol) and pyridine (1.21 mL, 15.0 mmol) in 1,4-dioxane (20 mL); followed by followed by 10% Pd/C (212 mg) in water/EtOH (1:1, 100 mL); followed by 1,1′-carbonyldiimidazole (1.14 g, 7.02 mmol) and triethylamine (0.49 mL, 3.51 mmol) in DMF (8 mL) using the methods of (IntA1), step 1 and (IntA14), steps 2 and 3.
