反应详情

Prepared from 3-(6,7-dimethoxyquinazolin-4-yloxy)aniline from Example 113A (30 mg, 0.10 mmol) and phenyl 5-(1-hydroxy-2-methylpropan-2-yl)isoxazol-3-ylcarbamate from the previous step (41 mg, 0.15 mmol) according to the method described for 14346,7-dimethoxyquinazolin-4-yloxy)phenyl)-3-(3-isopropylisoxazol-5-yl)urea in Example 122B. Purification via preparative TLC eluting with 10% methanol in dichloromethane afforded 1-(3-(6,7-dimethoxyquinazolin-4-yloxy)phenyl)-3-(5-(1-hydroxy-2-methylpropan-2-yl)isoxazol-3-yl)urea as a colorless solid (30 mg, 61%). 1H NMR (300 MHz, DMSO-d6) δ 9.57 (brs, 1H), 8.99 (brs, 1H), 8.56 (s, 1H), 7.56-7.58 (m, 2H), 7.38-7.42 (m, 2H), 7.23-7.26 (m, 1H), 6.95-6.98 (m, 1H), 6.49 (s, 1H), 4.95 (brs, 1H), 3.98-3.99 (2×s, 6H), 3.43 (s, 2H), 1.20 (s, 6H); LC-MS (ESI) m/z 480 (M+H)+.

1. customPurification via preparative TLC
2. washeluting with 10% methanol in dichloromethane