Hydrochloric Acid → 1-{[1-(2-Methoxycarbonylamino-3,3-dimethyl-butyryl)-4-(7-methoxy-2-phenyl-quinolin-4-yloxy)-pyrrolidine-2-carbonyl]-amino}-2-vinyl-cyclopropanecarboxylic acid

Participants

Reaction Steps

To a solution of 1-{[1-(2-methoxycarbonylamino-3,3-dimethyl-butyryl)-4-(7-methoxy-2-phenyl-quinolin-4-yloxy)-pyrrolidine-2-carbonyl]-amino}-2-vinyl-cyclopropane-carboxylic acid ethyl ester (410 mg, 0. 52 mmol) in THF (20 mL), methanol (11.5 mL) and water (3.8 mL) mixture, lithium hydroxide monohydrate (328 mg, 7.82 mmol) was added. The reaction mixture was stirred at rt for overnight. Then it was acidified with 1N HCl solution and concentrated. The residue was extracted with EtOAc twice and the organic layers were combined. Then it was dried (MgSO4) and concentrated to give an off-white solid. (230 mg, 69% yield). 1H NMR (400 MHz, CD3OD) δ 1.02 (s, 9H), 1.43 (dd, J=9.54, 5.14 Hz, 1H), 1.68 (dd, J=8.07, 5.14 Hz, 1H), 2.17 (m, 1H), 2.57 (m, 1H), 2.75 (m, 1H), 3.34 (s, 3H), 4.03 (s, 3H), 4.06 (m, 1H), 4.18 (s, 1H), 4.60–4.70 (m, 2H), 4.88 (m, 1H), 5.08 (dd, J=10.39, 1.59 Hz, 1H), 5.25 (dd, J=17.36, 1.71 Hz, 1H), 5.77–5.87 (m, 2H) 7.38 (dd, J=9.29, 2.20 Hz, 1H), 7.50 (m, 1H), 7.62 (m, 1H), 7.69–7.78 (m, 3H), 8.03–8.07 (m, 2H), 8.36 (d, J=9.20 Hz, 1H). LC-MS (retention time: 2.177 min.), MS m/z 645 (MH+).

Provenance & Evidence