1-Methylimidazole → HCID 178523396, Verbindung

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a solution of (3S)-2-[(2R)-3-cyclopentyl-2-({formyl[(phenylmethyl)oxy]amino}methyl)propanoyl]-1-{[(phenylmethyl)oxy]carbonyl}-3-pyrazolidine carboxylic acid (176 mg, 0.327 mmol) in DMF (2 ml) was added 1-methylimidazole (52 μl, 0.655 mmol) and cooled to 0° C. Mesyl chloride (27 μL, 0.344 mmol) was added dropwise at 0° C., and the resulting mixture was stirred for 30 min followed by the addition of 2-amino pyridine N-oxide (36 mg, 0.327 mmol). The reaction was warmed to rt. After 2 h, the reaction mixture was concentrated, diluted with methanol, and purified by reverse phase HPLC to afford 105 mg (0.167 mmol, 51%) of the title compound. LC/MS: (M+H)+: 629.8.

Herkunft & Nachweise