反应详情

To a solution of 4-chloro-5-methyl-1-(4-(naphthalen-2-ylsulfonylcarbamoyl)-2-(1,2,3,4-tetrahydroisoquinoline-2-carbonyl)phenyl)-1H-pyrazole-3-carboxylic acid (116 mg, 0.18 mmol) in CH2Cl2 (1.0 mL) was added oxalyl chloride (48 μL, 0.55 mmol) followed by 1 drop of DMF. The resulting reaction mixture was stirred at room temperature for 1 h and then concentrated in vacuo. The residue was dissolved in CH2Cl2 (1.0 mL), and methyl 3-(4-(butylamino)phenyl)propanoate (Intermediate 122A, 17 mg, 0.074 mmol) and i-Pr2EtN (32 μL, 0.18 mmol) were added. The reaction mixture was stirred at room temperature for 2 h and then concentrated in vacuo. The crude oil was purified by preparative HPLC to give the title compound (30 mg, 57%). 1H NMR (CD3OD, 1:1 mixture of amide rotamers) δ 8.73 (s, 1H), 8.10 (d, J=9.0 Hz, 1H), 8.07-8.06 (m, 1H), 8.04-8.00 (m, 2H), 7.94-7.91 (m, 1H), 7.74-7.66 (m, 2H), 7.48 (br s, 1H), 7.39 (br s, 1H), 7.21-7.19 (m, 3.5H), 7.03 (br s, 1H), 6.98-6.96 (m, 0.5H), 6.90 (br s, 1H), 6.70 (d, J=8.6 Hz, 1H), 6.43 (br s, 1H), 4.73 (br s, 1H), 4.44 (br s, 1H), 4.26 (br s, 1H), 4.10 (br s, 1H), 3.90 (br s, 1H), 3.60-3.56 (m, 3H), 3.48 (br s, 2H), 2.94 (br s, 1H), 2.79-2.71 (m, 2H), 2.54-2.46 (m, 2H), 2.12 (s, 3H), 1.43-1.24 (m, 4H), 0.89-0.83 (m, 3H); MS (ESI+) m/z 847.0 (M+H)+.

1. customThe resulting reaction mixture
2. concentrationconcentrated in vacuo
3. dissolutionThe residue was dissolved in CH2Cl2 (1.0 mL)
4. stirringThe reaction mixture was stirred at room temperature for 2 h
5. concentrationconcentrated in vacuo
6. customThe crude oil was purified by preparative HPLC