Trifluoroacetic acid → HCID 118379946, compound

Participants

Reaction Steps

Followed the general procedure for the acid mediated deprotection using (2R,3S)-3-((Z)-2-(((1-(tert-butoxy)-2-methyl-1-oxopropan-2-yl)oxy)imino)-2-(2-((tert-butoxycarbonyl)amino)thiazol-4-yl)acetamido)-2-(((R)-5-(((tert-butoxycarbonyl)amino)methyl)-2-oxooxazolidin-3-yl)methyl)-4-oxoazetidine-1-sulfonic acid (160 mg, 0.199 mmol), DCM (1.5 mL) and TFA (500 μL, 6.49 mmol). The crude residue purified by reverse phase prep HPLC (XSelect CSH, 30×100 mm, 5 μm, C18 column; ACN-water with 0.1% formic acid modifier, 60 mL/min), affording the title compound (85.8 mg, 78%) as a white powder. LCMS: m/z=548.0 (M+1); 1H NMR (400 MHz, D2O) δ ppm 6.93 (s, 1H), 5.23 (d, J=5.6 Hz, 1H), 4.76-4.69 (m, 1H), 4.54-4.49 (m, 1H), 3.84 (t, J=9.6 Hz, 1H), 3.56 (dd, J=14.8, 9.6 Hz, 1H), 3.41-3.34 (m, 2H), 3.21-3.11 (m, 2H), 1.34 (s, 3H), 1.32 (s, 3H).

Provenance & Evidence