反应详情

A suspension of 96 mg of 4-{4-[5-(5S)-(acetylamino-methyl)-2-oxo-oxazolidin-3-yl]-2-fluoro-phenoxymethyl}-4-hydroxy-piperidine-1-carboxylic acid tert-butyl ester (MW: 481.52, 0.2 mmol), 195 mg of Z-Lys (Z)—OH (MW: 414.46, 0.4 mmol) and 49 mg of 4-dimethylaminopyridine (MW: 122.17, 0.4 mmol) in 2 ml dichloromethane was treated under stirring at room temperature with 115 mg N-(3-dimethylaminopropyl)-N′-ethyl-carbodiimide hydrochloride (MW: 191.70, 0.6 mmol). The reaction mixture was stirred over night. The mixture was diluted with 20 ml ethyl acetate and the organic layer washed successively with 10 ml 1 N aqueous hydrochloric acid, 20 ml water and 20 ml brine. The organic layer was dried over magnesium sulfate, filtered and the filtrate evaporated to dryness. The residue was purified by chromatography on silica, using a 9/1 dichloromethane/methanol mixture as eluent to leave a colorless sticky oil. Yield: 150 mg, 88%. MS: 878.8 (M+H)+, Method ESI+.

1. additionwas treated
2. washthe organic layer washed successively with 10 ml 1 N aqueous hydrochloric acid, 20 ml water and 20 ml brine
3. dry with materialThe organic layer was dried over magnesium sulfate
4. filtrationfiltered
5. customthe filtrate evaporated to dryness
6. customThe residue was purified by chromatography on silica
7. customto leave a colorless sticky oil