反应详情

(S)-1-(6-Fluoro-1-phenyl-1H-benzoimidazol-2-yl)ethylamine dihydrochloride (0.082 g, 0.25 mmol), 4-chloropyrido[3,2-d]pyrimidine (J. Med Chem, 1833, 1996) (0.035 g, 0.21 mmol) and DIPEA (0.174 mL, 1.0 mmol) in IPA (1 mL) was heated to 70° C. in a sealed tube under argon for 1 h. The reaction mixture was cooled, diluted with EtOAc (20 mL) and washed with water (2 mL). The aqueous was extracted with EtOAc (10 mL). The combined organic extracts were dried (Na2SO4), evaporated to dryness and purified by column chromatography (Si—PCC, gradient 0-8% (9:1 MeOH/0.880 NH3) in DCM). Product containing fractions were evaporated and freeze dried to give 317 as an off white solid, (15 mg, 18%). LCMS (Method C): RT 3.55 min [M+H]+ 385.05. 1H NMR δ (ppm) (DMSO-d6): 8.83 (1H, dd, J=4.24, 1.57 Hz), 8.63 (1H, d, J=7.55 Hz), 8.40 (1H, s), 8.11 (1H, dd, J=8.46, 1.57 Hz), 7.84 (1H, dd, J=8.47, 4.24 Hz), 7.74 (1H, dd, J=8.81, 4.85 Hz), 7.59 (2H, d, J=7.53 Hz), 7.50-7.50 (3H, m), 7.12 (1H, ddd, J=9.87, 8.81, 2.53 Hz), 6.86 (1H, dd, J=8.92, 2.51 Hz), 5.59 (1H, dq, J=7.09 Hz), 1.59 (3H, d, J=6.81 Hz)

1. temperatureThe reaction mixture was cooled
2. washwashed with water (2 mL)
3. extractionThe aqueous was extracted with EtOAc (10 mL)
4. dry with materialThe combined organic extracts were dried (Na2SO4)
5. customevaporated to dryness
6. custompurified by column chromatography (Si—PCC, gradient 0-8% (9:1 MeOH/0.880 NH3) in DCM)
7. additionProduct containing fractions
8. customwere evaporated
9. customfreeze dried