Trifluoroacetic acid → HCID 178460217, compound

Participants

Reaction Steps

To a solution of 2-(((Z)-(1-(2-aminothiazol-4-yl)-2-(((2R,3S)-2-((4-((2,3-bis(tert-butoxycarbonyl)guanidino)methyl)-1H-1,2,3-triazol-1-yl)methyl)-4-oxo-1-sulfoazetidin-3-yl)amino)-2-oxoethylidene)amino)oxy)-2-methylpropanoic acid (0.15 mmol, assumed quantitative conversion) In DCM (1.5 mL) at 0° C. was added TFA (689 μL, 9 mmol). The cold bath was removed after 10 min. After 4 h at rt it was diluted with DCM (1.5 mL) and concentrated in vacuo. The crude residue was purified by reverse phase prep HPLC (X-Bridge, 30×100 mm, 5 μm, C18 column; acetonitrile-water with 0.1% formic acid modifier, 1 mL/min) to afford the title compound (2.7 mg, 3%). LCMS: m/z=572.0 (M−1); 1H NMR (400 MHz, D2O): δ 1H NMR (400 MHz, D2O): δ 7.91 (s, 1H), 6.80 (s, 1H), 5.31 (d, J=5.2 Hz, 1H), 4.54 (s, 1H), 4.35 (s, 2H), 3.50-3.35 (m, 2H), 1.19 (s, 3H), 1.18 (s, 3H).

Provenance & Evidence