Hydrochloric Acid → (R)-3-[N'-(5-Acetyl-2H-pyrazole-3-carbonyl)-N-(5'-chloro-2'-fluorobiphenyl-4-ylmethyl)hydrazino]-2-hydroxypropionic Acid 2-Methoxyethyl Ester

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Reaction Steps

(R)-3-[N′-(5-Acetyl-2H-pyrazole-3-carbonyl)-N-(5′-chloro-2′-fluorobiphenyl-4-ylmethyl)hydrazino]-2-hydroxypropionic acid (10.0 mg, 21 μmol) was combined with 2-methoxyethanol (0.1 mL, 1.3 mmol). A solution of 4 M HCl in dioxane (53 μL, 0.2 mmol) was added, and the resulting mixture was stirred for 1 hour at room temperature. LC/MS showed the mass of the desired product. The mixture was concentrated by rotary evaporation and purified (reverse phase column) to yield the title compound (2.7 mg, purity 95%) as a white solid TFA salt. MS m/z [M+H]+ calc'd for C25H26ClFN4O6, 533.15. found 533.1.

Provenance & Evidence