Trifluoroacetic acid → HCID 118390880, compound

Participants

Reaction Steps

Followed the general procedure for the acid mediated deprotection using (2R,3S)-2-((1H-1,2,3-triazol-1-yl)methyl)-3-((Z)-2-(((1-(tert-butoxy)-2-methyl-1-oxopropan-2-yl)oxy)imino)-2-(2-((tert-butoxycarbonyl)amino)thiazol-4-yl)acetamido)-4-oxoazetidine-1-sulfonic acid (80 mg, 0.121 mmol), DCM (4 mL) and TFA (1 mL, 13 mmol). The crude residue was purified by reverse phase prep HPLC (T3, 30×150 mm, 5 μm, C18 column; ACN-water with 0.1% formic acid modifier, 1 mL/min), affording the title compound (12 mg, 20%) as a white solid. LCMS: m/z=500.9 (M−1); 1H NMR (400 MHz, D2O): δ 7.95 (s, 1H), 7.67 (s, 1H), 7.04 (s, 1H), 5.38 (d, J=5.6 Hz, 1H), 4.88-4.80 (m, 1H), 4.78-4.70 (m, 2H assumed; obscured by solvent residual peak), 1.34 (s, 6H).

Provenance & Evidence