HCID 86655235, compound → HCID 67174405, compound

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A solution of 2,2,2-trifluoro-N-(4-(N-(1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-6-yl)sulfamoyl)-3-((4-methyloxazol-2-yl)methyl)phenyl)acetamide (200 mg, 0.40 mmol) in 7M ammonium in MeOH (10 mL) was stirred in a sealed tube at 50° C. for 4 hours. After concentrated, the crude mixture was purified by prep HPLC (SunFire Prep C18 OBD 5 uM 30×50 mm column) to give the title compound as a yellow solid (59 mg, yield 37%). 4-Amino-N-(1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-6-yl)-2-((4-methyloxazol-2-yl)methyl)benzenesulfonamide MS calcd for (C18H18BN3O5S): 399.2. MS found (ESI negative): (M−H)−=398.1. 1H NMR (DMSO-d6) δ (ppm): 9.93 (s, 1H), 9.10 (s, 1H), 7.62 (s, 1H), 7.48 (d, J=8.8 Hz, 1H), 7.37 (s, 1H), 7.16 (d, J=8.0 Hz, 1H), 7.05 (d, J=8.0 Hz, 1H), 6.33 (d, J=8.8 Hz, 1H), 6.12 (s, 1H), 4.80 (s, 2H), 4.25 (s, 2H), 1.98 (s, 3H)

Provenance & Evidence