反应详情

4-(((4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)carbamoyl)-1-isopropyl-1H-pyrazolo[3,4-b]pyridine-6-carboxylic acid (1 equiv.) was dissolved in DMSO and methylamine (2 equiv.) was added to it. The reaction mixture was stirred at room temperature for 15 min before PYBOP (1.5 equiv.) was added to it and stirring was continued overnight. After completion of the reaction, water was added to it and extraction was carried out using 20% MeOH/DCM. The combined organic layers were washed with water, dried over anhydrous Na2SO4, filtered and concentrated under reduced pressure to afford crude material which was purified by column chromatography/prep. HPLC to give the desired compound (8% yield). LCMS: 397.15 (M+1)+; HPLC: 93.04% (@ 254 nm) (Rt;5.597); 1H NMR (DMSO-d6, 400 MHz) δ 11.53 (s, 1H), 9.04 (t, 1H, J=4.4 Hz), 8.95 (d, 1H, J=4.8 Hz), 8.43 (s, 1H), 8.17 (s, 1H), 5.88 (s, 1H), 5.49-5.43 (m, 1H), 4.36 (d, 2H, J=4.8 Hz), 2.88 (d, 3H, J=4.4 Hz), 2.21 (s, 3H), 2.12 (s, 3H), 1.52 (d, 6H, J=6.8 Hz).

1. additionwas added to it
2. additionwas added to it and extraction
3. washThe combined organic layers were washed with water
4. dry with materialdried over anhydrous Na2SO4
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure
7. customto afford crude material which
8. customwas purified by column chromatography/prep