反应详情

温度

60 °C

To a MeOH—H2O (5:1) 72 mL solution of methyl 2-{[(tert-butoxycarbonyl)amino]methyl}-3H-imidazo[4,5-b]pyridine-6-carboxylate (11.0 g, 37.6 mmol) was added lithium hydroxide monohydrate (7.5 g, 179 mmol). After stirring at 60° C. for 4 hr, the reaction mixture was cooled to 0 acidified by 1N HCl to pH 5, concentrated and purified by Prep-HPLC (77×250 mm, JT BAKER C-18 RP column, 10μ particle size, linear gradient, 5% MeCN/H2O+0.1% TFA to 35% MeCN/H2O+0.1% TFA@200 mL/min) to give the title compound (7.5 g, 71%). MS (ESI): m/z 293(M+H). 1H-NMR (400 MHz, d6-DMSO): δ 13.04 (br. s, 1H), 8.84 (s, 1H), 8.31 (s, 1H), 7.56 (s, 1H), 4.39 (s, 2H), 1.35 (s, 9H).

1. temperaturethe reaction mixture was cooled to 0
2. concentrationconcentrated
3. custompurified by Prep-HPLC (77×250 mm, JT BAKER C-18 RP column, 10μ particle size, linear gradient, 5% MeCN/H2O+0.1% TFA to 35% MeCN/H2O+0.1% TFA@200 mL/min)