反应详情

温度

0 °C

(S)-2-[(Azepane-1-carbonyl)-amino]-4-methyl-pentanoic acid (0.45 g, 1.8 mmol, Example 1, Step B) was dissolved in dry DMF (6 mL) under nitrogen atmosphere and cooled to 0° C. in an ice-water bath. To this solution were added, in succession, N-methylmorpholine (0.68 mL, 6.1 mmol) and solid O-benzotriazol-1-yl-N,N,N′,N′-tetramethyluronium hexafluorophosphate (0.70 g, 1.8 mmol). The resulting reaction mixture was stirred at that temperature for 30 minutes; then a solution of C-(1-phenyl-1H-indazol-3-yl)-methylamine monohydrochloride (0.45 g, 1.8 mmol) in dry DMF (8 mL) was added. After additional 20 minutes stirring at 0° C., the ice-water bath was removed, and the reaction mixture was stirred and allowed to warm up to ambient temperature for 15 minutes. The reaction mixture was poured into 50 mL of EtOAc; the resulting mixture was successively washed with 3% aqueous HCl solution, brine, saturated aqueous NaHCO3 solution, brine, and was dried over Na2SO4. The solution was concentrated in vacuo affording an amber oil which was further purified by flash chromatography (80% EtOAC in hexanes). Finally, recrystallization from EtOAc-Hexanes afforded 0.39 g (48%) of the pure titled compound as a off-white solid: mp 135-136° C. APCI-MS m/z 462.0 (MH+).

1. customThe resulting reaction mixture
2. stirringAfter additional 20 minutes stirring at 0° C.
3. customthe ice-water bath was removed
4. stirringthe reaction mixture was stirred
5. temperatureto warm up to ambient temperature for 15 minutes
6. additionThe reaction mixture was poured into 50 mL of EtOAc
7. washthe resulting mixture was successively washed with 3% aqueous HCl solution, brine, saturated aqueous NaHCO3 solution, brine
8. dry with materialwas dried over Na2SO4
9. concentrationThe solution was concentrated in vacuo
10. customaffording an amber oil which
11. customwas further purified by flash chromatography (80% EtOAC in hexanes)
12. customFinally, recrystallization from EtOAc-Hexanes