反应详情

温度

40 °C

To a stirred suspension of (5R)-3-(3,4-dihydro-4-methyl-3-thioxo-2H-1,4-benzothiazin-7-yl)-2-oxo-5-oxazolidinecarboxylic acid methyl ester (Step 1, 100 mg, 0.2955 mmol) in MeOH (3 mL) is added 2.0 M ammonia in MeOH (1.0 mL). This mixture is heated at 40° C. for 24 h at which time the reaction is concentrated under reduced pressure. The residue is washed with MeOH (4 mL) and purified by column chromatography (2% MeOH/CH2Cl2) to give the title compound as a white solid (25 mg, 26%), 1H NMR (300 MHz, DMSO) δ 7.87 (br s, 1H), 7.64 (d, 2H), 7.51 (s, 2H), 5.03 (dd, 1H), 4.28 (t, 1H), 4.02 (dd, 1H), 3.85 (s, 2H), 3.32 (s, 3H); MS for C13H13N3O3S2 m/z 324.5 (M+H)+.

1. concentrationis concentrated under reduced pressure
2. washThe residue is washed with MeOH (4 mL)
3. custompurified by column chromatography (2% MeOH/CH2Cl2)