反应详情

The above prepared (S)-4-benzyl-3-((2S,3R)-3-{2-[dimethyl-(1,1,2-trimethyl-propyl)-silanyloxy]-4-[2-(5-methyl-2-phenyl-oxazol-4-yl)-ethoxy]-phenyl}-3-hydroxy-2-methoxy-propionyl)-oxazolidin-2-one (2.8 g, 3.91 mmol) was dissolved in 10 ml of trifluoroacetic acid, treated at 0° C. with 10 ml of triethylsilane and then kept for 3 hours at ambient temperature. The reaction mixture was then poured onto crashed ice/AcOEt/NaOH (1M), the organic layer was washed with water and brine, dried over magnesium sulfate and evaporated to dryness. Flash chromatography (SiO2, heptane/AcOEt) delivered 1.6 g (58%) of the title compound (purity ˜80%) as a yellow foam.

1. additionThe reaction mixture was then poured
2. washthe organic layer was washed with water and brine
3. dry with materialdried over magnesium sulfate
4. customevaporated to dryness