Trifluoroacetic acid → (S)-Methyl 2-((tert-butoxycarbonyl)amino)-3-(2-((5-(hydroxymethyl)thiazol-2-yl)amino)acetamido)propanoate

Participants

Reaction Steps

To a solution of material from Example 106 (10 mg, 0.026 mmol) in methanol (1.5 mL) is added sodium borohydride (3.5 mg, 0.093 mmol). The reaction is allowed to stir at room temp for 1 min, cooled to 0° C., quenched with trifluoroacetic acid (26.5 μL, 0.344 mmol) and the solvent removed in vacuo. The resulting residue is used immediately in the next reaction. LC/MS (Condition A): ret, T=2.54 min, (M+Na) 411.

Provenance & Evidence