反应详情

温度

25 °C

In a 16×100 mm screw cap test tube were added HATU (80.5 mg, 212 μmol.20) and tert-butyl (3R,4R)-4-aminotetrahydro-2H-pyran-3-ylcarbamate (prepared as described in WO2010/97248 A1, 2010; 38.1 mg, 176 μmol) then 2-(5-methoxy-1-methyl-1H-indazol-3-yl)-5-((2-(trimethylsilyl)ethoxy)methyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid (80 mg, 176 mmol) dissolved in DMF (2.00 mL) was added to give a light yellow solution which immediately formed a white precipitated. The reaction mixture stirred at 25° C. overnight, solvents evaporated and residue purified by chromatography (60 g column, 50 μm from Analogix, 0 to 5% over 15 min (MeOH containing 10% ammonium hydroxide)/dichloromethane to yield tert-butyl (3R,4R)-4-(2-(5-methoxy-1-methyl-1H-indazol-3-yl)-5-((2-(trimethylsilyl)ethoxy)methyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamido)tetrahydro-2H-pyran-3-ylcarbamate (115 mg, 176 μmol, 100%) as a very light yellow solid. MS (M+Na)+=674 (>90% purity); 1H NMR (CDCl3) δ: 9.29 (s, 1H), 8.51 (d, J=9.1 Hz, 1H), 8.37 (s, 2H), 7.48 (d, J=9.1 Hz, 1H), 7.31 (dd, J=9.1, 3.0 Hz, 1H), 6.27 (d, J=10.2 Hz, 1H), 5.75 (s, 2H), 4.59-4.81 (m, 1H), 4.18-4.36 (m, 4H), 3.91-4.16 (m, 5H), 3.54-3.81 (m, 4H), 2.33 (qd, J=12.7, 4.9 Hz, 1H), 1.89 (d, J=13.2 Hz, 1H), 0.93-1.12 (m, 2H), 0.82 (s, 9H), 0.00 (s, 9H).

1. customIn a 16×100 mm screw cap test tube
2. additionwas added
3. customto give a light yellow solution which
4. customimmediately formed a white precipitated
5. customsolvents evaporated
6. customresidue purified by chromatography (60 g column, 50 μm from Analogix, 0 to 5% over 15 min (MeOH containing 10% ammonium hydroxide)/dichloromethane