反应详情

温度

20 °C

O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluoro-phosphate (1.157 g, 3.04 mmol) was added in one portion to 4-(tert-butoxycarbonylamino)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidine-4-carboxylic acid (Intermediate 1) (1 g, 2.77 mmol) and N,N-diisopropylethylamine (1.006 mL, 6.09 mmol) in NMP (10 mL) at 20° C. The resulting solution was stirred at 20° C. for 5 minutes. (S)-methyl 3-amino-3-(4-chlorophenyl)propanoate (hydrochloride) (Intermediate 20) (0.692 g, 2.77 mmol) was then added to the solution and stirred at room temperature for 3 hours. The reaction mixture was diluted with EtOAc (100 mL), and washed sequentially with water (2×50 mL) and brine (50 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford crude product. The crude product was purified by flash silica chromatography, elution gradient 0 to 5% MeOH in DCM. Pure fractions were evaporated to dryness to afford (S)-methyl 3-(4-(tert-butoxycarbonylamino)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidine-4-carboxamido)-3-(4-chlorophenyl)propanoate (1.27 g, 82%) as a white solid. 1H NMR (399.9 MHz, DMSO-d6) δ 1.40 (9H, s), 1.99 (2H, s), 2.04-2.07 (2H, m), 2.79-2.84 (2H, m), 3.56 (3H, s), 3.60-3.66 (1H, m), 3.67-3.70 (1H, m), 4.20 (2H, t), 5.20-5.26 (1H, m), 6.73 (1H, d), 7.13 (1H, s), 7.27 (1H, t), 7.35 (4H, q), 8.14 (1H, d), 8.21 (1H, s), 11.98 (1H, s). m/z (ESI+) (M+H)+=557; HPLC tR=2.12 min.

1. stirringstirred at room temperature for 3 hours
2. washwashed sequentially with water (2×50 mL) and brine (50 mL)
3. dry with materialThe organic layer was dried over MgSO4
4. filtrationfiltered
5. customevaporated
6. customto afford crude product
7. customThe crude product was purified by flash silica chromatography, elution gradient 0 to 5% MeOH in DCM
8. customPure fractions were evaporated to dryness