反应详情

温度

105 °C

2-Chloro-9-cyclopentyl-8,9-dihydro-5-methyl-5H-pyrimido[4,5-b][1,4]diazepin-6(7H)-one (100 mg, 0.357 mmol) and ethyl 4-aminopiperidine-1-carboxylate (129 μl, 0.714 mmol) in isopropylalcohol (2 ml) were heated at 90° C. for 24 hours. Diisopropylethylamine (125 μl, 0.714 mmol) was added and the reaction mixture was heated at 105° C. for another 24 hours. The crude mixture was concentrated in vacuo and purified by reverse phase preparative HPLC [Waters Sunfire C18, 10 uM, 100 Å column, gradient 10%-95% B (solvent A: 0.05% TFA in water; solvent B: CH3CN) over 16 minutes at 25 mL/min] to afford the title compound (18 mg) as an off-white powder. NMR DMSO D6 1.20 (3H, t), 1.28-1.91 (14H, m), 2.80-2.96 (2H, m), 3.11 (3H, s), 3.50-3.58 (2H, m), 3.70-3.85 (1H, m), 3.90-3.98 (2H, m), 4.03 (2H, q), 4.60-4.70 (1H, m), 6.65 (1H, br s), 7.88 (1H, s); HPLC rt(min): 8.09; MS (ES+) 417, (ES−) 415.

1. concentrationThe crude mixture was concentrated in vacuo
2. custompurified by reverse phase preparative HPLC [Waters Sunfire C18, 10 uM, 100 Å column, gradient 10%-95% B (solvent A: 0.05% TFA in water; solvent B: CH3CN) over 16 minutes at 25 mL/min]