Hydrochloric Acid → N-benzyl-4-methyl-2-(2-((pyridin-3-yloxy)methyl)piperazin-1-yl)oxazole-5-carboxamide trihydrochloride

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Reaction Steps

4 M HCl in 1,4-dioxane (4 mL, 16 mmol) was added to a solution of tert-butyl 4-(5-(benzylcarbamoyl)-4-methyloxazol-2-yl)-3-((pyridin-3-yloxy)methyl)piperazine-1-carboxylate in MeOH (1 mL). After 1 h, the reaction mixture was concentrated under reduced pressure and purified by HPLC (10 to 90% MeCN/0.1% TFA in H2O/0.1% TFA gradient). The desired chromatography fractions were concentrated under reduced pressure, dissolved in MeOH (1 mL), and treated with 4 M HCl in 1,4-dioxane. This was concentrated under reduced pressure, yielding 3.6 mg (3%) of the title compound as an off-white solid. LC-MS: RT=4.12 min, [M+H]+=408.7.

Provenance & Evidence