4-Chlorophenyl 3-(2-fluoropropan-2-yl)isoxazol-5-ylcarbamate → 1-(3-(2-Fluoropropan-2-yl)isoxazol-5-yl)-3-(3-(7-hydroxy-6-methoxyquinazolin-4-yloxy)phenyl)urea

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of 4-(3-aminophenoxy)-6-methoxyquinazolin-7-ol (200 mg, 0.71 mmol) (prepared as described in example 95A, steps 1 through 3) in anhydrous DMF (6 mL), was added 4-chlorophenyl 3-(2-fluoropropan-2-yl)isoxazol-5-ylcarbamate (212 mg, 0.71 mmol) and the mixture was heated to 60° C. for 2.5 h. Concentration in vacuo followed by purification via preparative reverse phase HPLC (eluted with a gradient of solvent B=0.05% HOAc/CH3CN and solvent A=0.05% HOAc/H2O), afforded 1-(3-(2-fluoropropan-2-yl)isoxazol-5-yl)-3-(3-(7-hydroxy-6-methoxyquinazolin-4-yloxy)phenyl)urea (41 mg, 13%) as a colorless solid. 1H NMR (300 MHz, DMSO-d6) δ 10.64 (brs, 1H), 9.13 (brs, 1H), 8.48 (s, 1H), 7.55-7.56 (m, 2H), 7.41 (dd, J=8.1, 8.1 Hz, 1H), 7.32 (m, 1H), 7.23 (s, 1H), 6.98 (m, 1H), 6.15 (s, 1H), 3.99 (s, 3H), 1.66 (d, J=22 Hz, 6H); LC-MS (ESI) m/z 454 (M+H)+.

Provenance & Evidence