Trifluoroacetic acid → N-(3-Azetidinyl)-5-{(1R)-4-cyclohexyl-1-[2-(hydroxyamino)-2-oxoethyl]butyl}-1,2,4-oxadiazole-3-carboxamide

Participants

Reaction Conditions

Reaction Steps

A solution of tert-butyl 3-{[(5-{(1R)-4-cyclohexyl-1-[2-(hydroxyamino)-2-oxoethyl]butyl}-1,2,4-oxadiazol-3-yl)carbonyl]amino}-1-azetidinecarboxylate (Example 43) (160 mg, 0.33 mmol) in dichloromethane (10 ml) was cooled to 0° C. and treated with trifluoroacetic acid (7 ml) and the resulting mixture was stirred at 0° C. under a nitrogen atmosphere for 45 minutes. The solvent was removed under reduced pressure and the residue azeotroped from dichloromethane (×2). The residue was triturated with diethylether, filtered and dried to afford the title compound as a white solid (123 mg).

Provenance & Evidence