tert-Butyl (3S)-3-hydroxypyrrolidine-1-carboxylate → (R)-tert-butyl 3-(4-(3-(3-(5-tert-butylisoxazol-3-yl)ureido)phenoxy)-6-methoxyquinazolin-7-yloxy)pyrrolidine-1-carboxylate

Participants

Reaction Steps

Prepared from 1-(5-tert-butylisoxazol-3-yl)-3-(3-(7-hydroxy-6-methoxyquinazolin-4-yloxy)phenyl)urea from Example 95B (350 mg, 0.780 mmol) and (S)-3-hydroxy-1-tert-butoxycarbonylpyrrolidine (219 mg, 1.17 mmol) according to the procedure described for (S)-tert-butyl 3-(4-(3-(3-(5-tert-butylisoxazol-3-yl)ureido)phenoxy)-6-methoxyquinazolin-7-yloxy)pyrrolidine-1-carboxylate in Example 96A to afford (R)-tert-butyl 3-(4-(3-(3-(5-tert-butylisoxazol-3-yl)ureido)phenoxy)-6-methoxyquinazolin-7-yloxy)pyrrolidine-1-carboxylate as a colorless oil (109 mg, 23%). 1H NMR (300 MHz, DMSO-d6) δ 9.58 (brs, 1H), 9.00 (brs, 1H), 8.57 (s, 1H), 7.50-7.70 (m, 2H), 7.40-7.50 (m, 2H), 7.30 (m, 1H), 7.00 (m, 1H), 6.48 (s, 1H), 5.30 (brs, 1H), 4.00 (s, 3H), 3.70 (m, 1H), 3.40-3.50 (m, 2H), 3.25 (m, 1H), 2.20-2.40 (m, 2H), 1.40 (s, 9H), 1.30 (s, 9H); LC-MS (ESI) m/z 619 (M+H)+.

Provenance & Evidence