反应详情

A solution of 3-(2-(tert-butyldimethylsilyloxy)ethyl)-4-oxo-3,4-dihydroimidazo[5,1-d][1,2,3,5]tetrazine-8-carboxamide (50 mg, 0.148 mmol) in THF:AcOH:water (5 mL of a 1:3:1 v/v/v mixture) was stirred at room temperature. After 3 hours, the reaction mixture was concentrated in vacuo and the residue was purified by flash column chromatography (SiO2, gradient 0-100% acetonitrile in dichloromethane) to furnish the title compound as a white solid. Yield: 15 mg, 0.067 mmol, 45%. LCMS (ES+) m/z 225 (M+H)+ at 0.62 minutes. 1H NMR (400 MHz, d6-DMSO) δ: 8.84 (1H, s), 7.81 (1H, br s), 7.68 (1H, bs), 4.85 (1H, t) 4.34 (2H, t), 3.79 (2H, q).

1. concentrationthe reaction mixture was concentrated in vacuo
2. customthe residue was purified by flash column chromatography (SiO2, gradient 0-100% acetonitrile in dichloromethane)