Hydrochloric Acid → 3-(3-(4-(Piperidin-1-yl)-2-(4-(3-(trifluoromethyl)benzylamino) pyridin-2-yl)phenylcarbamoyl)benzylthio)propanoic acid

Participants

Reaction Steps

Into a 50-mL round bottom flask, was placed a solution of methyl 3-(3-(4-(piperidin-1-yl)-2-(4-(3-(trifluoromethyl)-benzylamino)pyridin-2-yl)phenylcarbamoyl)benzylthio)propanoate (300 mg, 0.35 mmol, 1.00 equiv, 78%) in tetrahydrofuran/H2O (20/5 mL), and LiOH (150 mg, 10.00 equiv, 40%). The resulting solution was stirred for 2 h at room temperature. The reaction progress was monitored by LCMS. The solution was adjusted to pH 6-7 with hydrochloric acid (1 N). The resulting solution was extracted with 3×50 mL of ethyl acetate and the organic layers combined. The resulting mixture was washed with 1×20 mL of ethoxyethane. The resulting mixture was concentrated under vacuum. The crude product (250 mg) was purified by reverse phase HPLC eluting with a water/CH3CN gradient containing 0.05% TFA to afford the product (27 mg, 10%) as a yellow oil. 1H-NMR (300 MHz, DMSO-d6, ppm) δ 13.49 (s, 1H), 10.05 (m, 1H), 8.89 (m, 1H), 8.02 (m, 1H), 7.68 (m, 4H), 7.37 (m, 5H), 7.08 (m, 1H), 6.91 (m, 2H), 6.28 (m, 1H), 3.80 (s, 2H), 3.23 (s, 4H), 2.27 (m, 2H), 1.63 (s, 6H). MS (ES, m/z): 649 [M+H]+.

Provenance & Evidence