tert-butyl 3-(3-(4-chloro-2-(1-(3-(trifluoromethyl)phenyl)-1H-pyrazol-3-ylcarbamoyl)phenylcarbamoyl)benzylthio)propanoate → 3-(3-(4-chloro-2-(1-(3-(trifluoromethyl)phenyl)-1H-pyrazol-3-ylcarbamoyl)-phenylcarbamoyl)benzylthio)propanoic acid

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Reaction Steps

Into a 50-mL round bottom flask, was placed a solution of tert-butyl 3-(3-(4-chloro-2-(1-(3-(trifluoromethyl)phenyl)-1H-pyrazol-3-ylcarbamoyl)phenylcarbamoyl)benzylthio)propanoate (150 mg, 0.23 mmol, 1.00 equiv) in dichloromethane (4 mL), trifluoroacetic acid (2 mL). The resulting solution was stirred for 2 h at room temperature. The resulting mixture was concentrated under vacuum. The crude product (100 mg) was purified by reverse phase HPLC eluting with a water/CH3CN gradient containing 0.05% TFA. The product was obtained as 48.9 mg (36%) of a white solid. 1H-NMR (300 MHz, DMSO, ppm): δ 12.21 (s, 1H), 11.73 (s, 1H), 11.56 (s, 1H), 8.68 (m, 1H), 8.49 (m, 1H), 8.10 (m, 3H), 7.92 (s, 1H), 7.73 (m, 7H), 7.01 (d, J=3 Hz, 1H), 3.86 (s, 2H), 2.59 (m, 2H). MS (ES, m/z): 625 [M+Na]+.

Provenance & Evidence