Trifluoroacetic acid → HCID 118380007, 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-((1-(2-((tert-butoxycarbonyl)amino)ethyl)-1H-1,2,3-triazol-4-yl)methyl)-4-oxoazetidine-1-sulfonic acid (7.22 mg, 9.00 μmol), DCM (200 μl) and TFA (50 μl, 649 μmol). The crude residue was purified by reverse phase prep HPLC (XSelect CSH, 19×100 mm, 5 μm, C18 column; AcN-water with 0.1% formic acid modifier, 24 mL/min) affording the title compound (1.2 mg, 24%). LCMS: Rt=0.487 min, m/z=546.2 (M+1). Method 2m_acidic.

Provenance & Evidence