Trifluoroacetic acid → HCID 118379868, compound

Participants

Reaction Steps

Followed the general procedure for the acid mediated deprotection using (2R,3S)-2-((4-(aminomethyl)-5-((bis(tert-butoxycarbonyl)amino)methyl)-2H-1,2,3-triazol-2-yl)methyl)-3-((Z)-2-((1-((benzhydryloxy)carbonyl)cyclopropoxy)imino)-2-(2-((tert-butoxycarbonyl)amino)thiazol-4-yl)acetamido)-4-oxoazetidine-1-sulfonic acid (109 mg, 0.11 DCM (1.1 mL), and TFA (0.49 mL, 6.36 mmol) for 2 h. The crude residue was 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 (12 mg, 19%). LCMS: Rt=0.46 min, m/z=559.2 (M+1), Method 2m_acidic; 1H NMR (400 MHz, D2O): δ 7.16 (s, 1H), 5.61 (d, J=5.6 Hz, 1H), 5.07-4.88 (m, 3H), 4.34 (s, 4H), 1.39-1.13 (m, 4H).

Provenance & Evidence