反应详情

A solution of the product of Example 29, Step 1 (1.06 g, 2.0 mmol) in THF (25 ml) at 0° C. was treated with (methoxycarbonylsulfamoyl)-triethylammonium hydroxide inner salt (Burgess reagent, 952 mg, 4 mmol). After 18 hours at room temperature the mixture was diluted with ethyl acetate and water. The organic phase was washed with water and brine, dried and concentrated in vacuo. Purification of the residue by silica gel chromatography gave the title compound (450 mg, 46%); MS(ES+) m/e 486 [M+H]+.

1. washThe organic phase was washed with water and brine
2. customdried
3. concentrationconcentrated in vacuo
4. customPurification of the residue by silica gel chromatography