Isocyanatocarbonyl chloride → HCID 57422422, compound

Participants

Reaction Steps

1-(1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-yl)-3-phenethylurea (example 9-7a) (100 mg, 0.29 mmol) in THF (2 mL) was cooled to 0° C. and n-chlorocarbonyl isocyanate (93 mg, 0.88 mmol) was slowly added. After addition, the reaction was allowed to warm to room temperature and stirred for 1 hour. The reaction was concentrated and the residue was purified by silica column chromotography (100% to 90% dichloromethane in methanol:30 minute gradient) to afford (1-(1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-yl)-3-phenethyl-1,3,5-triazinane-2,4,6-trione (100 mg, 83%) as a white solid. 1H NMR (DMSO-d6, 400 MHz): δ2.13 (s, 3H), 2.39 (s, 3H), 2.82 (t, J=5.8 Hz, 2H), 3.88 (t, J=8.0 Hz, 2H), 5.17 (s, 2H), 7.19-7.31 (m, 5H), 7.44 (s, 1H), 7.89 (s, 1H), 11.84 (s, 1H). LC/MS; [M+H] calculated for C20H20N6O4; expected 409.15; found 409.20. The title compound was shown to inhibit hT2R08 bitter receptor and had an IC50 of 3.03 μM.

Provenance & Evidence