反应详情

To a solution of 6-methyl-pyridine-2-carboxylic acid (3-amino-adamantan-1-yl)-amide (Intermediate 1, 20 mg, 0.07 mmol) in DCM (5 mL) was added DIEA (30 mg, 0.2 mmol) and 1-methyl-1H-pyrazole-3-carbonyl chloride (20 mg, 0.1 mmol, Maybridge Chemical Co., Cornwall, UK). After stirring at room temperature for 16 h, the reaction mixture was partitioned into dichloromethane and saturated sodium bicarbonate. The organic layer was dried over sodium sulfate and concentrated under reduced pressure. The residue was purified on a RP-HPLC/MS purification system (Gradient: acetonitrile in water, 25-95%, in 3.9 minutes with a cycle time of 5 min. Flow rate: 100 mL/min. Mobile phase additive: 25 mM of ammonium formate. Column: Inertsil® C8, 30×50 mm, 5 μm particle size (GL Sciences, Tokyo, Japan)) to afford 10 mg (30%) of the title compound, 6-methyl-pyridine-2-carboxylic acid {3-[(1-methyl-1H-pyrazole-3-carbonyl)-amino]-adamantan-1-yl}-amide, as a white solid. 1H NMR (400 MHz, CDCl3) δ 8.07 (s, br, 1H), 7.95 (d, J=7.7 Hz, 1H), 7.69 (t, J=7.8 Hz, 1H), 7.33 (d, J=2.3 Hz, 1H), 7.26-7.21 (m, 1H), 6.76-6.72 (m, 2H), 3.89 (s, 3H), 2.55 (s, 3H), 2.54-2.52 (m, 2H), 2.35-2.08 (m, 10H), 1.72-1.69 (m, 2H). ESI-MS m/z: 394.1 (M+H)+.

1. customthe reaction mixture was partitioned into dichloromethane and saturated sodium bicarbonate
2. dry with materialThe organic layer was dried over sodium sulfate
3. concentrationconcentrated under reduced pressure
4. customThe residue was purified on a RP-HPLC/MS purification system (Gradient
5. waitacetonitrile in water, 25-95%, in 3.9 minutes with a cycle time of 5 min