Trifluoroacetic acid → (2S,3S)-2-(2,4-dioxo-3-{[2-(3-pyridinyl)-1,3-thiazol-4-yl]methyl}-1-imidazolidinyl)-3-methylpentanoic Acid

Participants

Reaction Conditions

Reaction Steps

A solution containing the product from Example 57B (0.090 g, 0.220 mmol) in dichloromethane (2 mL) was treated with trifluoracetic acid (2 mL), stirred at 25° C. for 16 hours, and concentrated. The residue was purified by reversed phase chromatography on a C18 column eluting with 5-100% acetonitrile in water (0.1% TFA) to give the title compound (0.131 g, 90% yield) as the trifluoroacetic acid salt.

Provenance & Evidence