反应详情

tert-Butyl 4-(2-(6-fluoro-1-methyl-1H-indazol-3-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamido)-4-methylpiperidine-1-carboxylate (103 mg, 0.20 mmol) was dissolved in 20 mL of a saturated solution of HCl (g) in dioxane and the mixture was stirred at room temperature for 2 hours. The solvent was evaporated at 40° C. under reduced pressure and the residue was purified by preparative-HPLC (Gemini 5u C18 150×21.2 mm; inject volume: 3 mL/inj, flow rate: 20 mL/min; wavelength: 214 nm and 254 nm; the gradient conditions were: 20% acetonitrile/80% water (0.1% trifluoroacetic acid, v/v) initially, proceeding to 40% acetonitrile/60% water (0.1% trifluoroacetic acid, v/v) in a linear fashion over 9 min.) to give 2-(6-fluoro-1-methyl-1H-indazol-3-yl)-N-(3-methylpyrrolidin-3-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide hydrochloride (30 mg, 36.5%) as a pale yellow solid. MS: (M+H)+=408; 1H NMR (300 MHz, DMSO): δ 9.16 (s, 1H), 8.57-8.41 (m, 4H), 7.92 (s, 1H), 7.75 (d, 1H, J=10.5 Hz), 7.32-7.26 (m, 1H), 6.98-6.93 (m, 1H), 5.75 (d, 2H, J=6.9 Hz), 4.19 (s, 3H), 3.16 (brs, 5H), 1.96 (brs, 3H), 1.61 (s, 3H).

1. customThe solvent was evaporated at 40° C. under reduced pressure
2. customthe residue was purified by preparative-HPLC (Gemini 5u C18 150×21.2 mm
3. wait20% acetonitrile/80% water (0.1% trifluoroacetic acid, v/v) initially, proceeding to 40% acetonitrile/60% water (0.1% trifluoroacetic acid, v/v) in a linear fashion over 9 min.