反应详情

3-[[(1,1′-Biphenyl)-4-yl]sulfonyl]amino-2-oxo-5-[(phenylthio)methyl]-tetrahydrofuran: To a solution of methyl 2-[[(1,1′-biphenyl)-4-yl]sulfonyl]amino-4,5-epoxypentanoate 16b (0.36 g, 1.47 mmol) in benzene (5 mL) and Et3N (0.27 g, 1.91 mmol) at room temperature is added slowly benzenethiol (0.38 mL, 3.67 mmol). The reaction mixture is stirred for 3 hrs. The resulting mixture is diluted with water, and then the mixture is extracted three times with EtOAc. The combined EtOAc layer is washed with water, brine, dried over MgSO4 and concentrated to an oil which is purified by column chromatography eluting with EtOAc/hexane (1:4 to 3:7) to give the desired product as a mixture of two isomers (ratio: ˜2:1).

1. extractionthe mixture is extracted three times with EtOAc
2. washThe combined EtOAc layer is washed with water, brine
3. dry with materialdried over MgSO4
4. concentrationconcentrated to an oil which
5. customis purified by column chromatography
6. washeluting with EtOAc/hexane (1:4 to 3:7)