Propionic Acid → HCID 178460003, compound

A mixture of propanoic acid (0.0095 mL, 0.13 mmol), HATU (0.019 g, 0.051 mmol) and N-methylmorpholine (0.014 mL, 0.13 mmol) in DCM (1 mL) was allowed to stir at rt for 30 min. Solid 4-[5-(2-chlorophenyl)-4-(4-{[2-(trimethylsilyl)ethoxy]methyl}-4H-1,2,4-triazol-3-yl)-1,3-oxazol-2-yl]pyridine-2-amine (0.020 g, 0.043 mmol) and DMAP (0.016 g, 0.13 mmol) were then added and the reaction mixture was allowed to stir at 80° C. overnight. The reaction mixture was allowed to cool to rt and was diluted with DCM (3 mL) and washed with saturated aqueous NaHCO3 (2 mL). The organic solution was separated and the aqueous solution was extracted with DCM. The organic solutions were combined and concentrated. The residue was redissolved in DCM (0.5 mL) and to this solution was added TFA (0.5 mL). The reaction mixture was allowed to stir at rt for 12 h and then concentrated to dryness. The residue was purified by column chromatography to give N-{4-[5-(2-chlorophenyl)-4-(4H-1,2,4-triazol-3-yl)-1,3-oxazol-2-yl]pyridine-2-yl}propanamide (Compound I-75) (3.5 mg, 21%). LCMS (FA): m/z=395 (M+H). 1H NMR (400 MHz, DMSO) δ 10.72 (s, 1H), 8.79 (s, 1H), 8.51 (d, J=5.2 Hz, 1H), 7.79 (d, J=7.6 Hz, 1H), 7.67 (dd, J=5.2, 1.5 Hz, 1H), 7.64 (dd, J=8.1, 1.2 Hz, 1H), 7.58 (td, J=7.7, 1.7 Hz, 1H), 7.50 (td, J=7.5, 1.3 Hz, 1H), 2.44 (q, J=7.5 Hz, 3H), 1.08 (t, J=7.5 Hz, 3H).

1. stirringto stir at 80° C. overnight
2. temperatureto cool to rt
3. washwashed with saturated aqueous NaHCO3 (2 mL)
4. customThe organic solution was separated
5. extractionthe aqueous solution was extracted with DCM
6. concentrationconcentrated
7. dissolutionThe residue was redissolved in DCM (0.5 mL) and to this solution
8. additionwas added TFA (0.5 mL)
9. stirringto stir at rt for 12 h
10. concentrationconcentrated to dryness
11. customThe residue was purified by column chromatography

ORD record

ord-326002f7f405486389a2e0aa08eff723

Source dataset

uspto-grants-2014_10

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08859768B2