反应详情

温度

50 °C

The compound (165 mg) produced in Example 55 was dissolved in DMSO (2 mL), a Wittig reagent (carboisopropoxymethylenetriphenylphosphorane, 218 mg) and 1-hydroxy-1,2-benziodoxol-3(1H)-one 1-oxide (IBX, 168 mg) were added, and the mixture was stirred at 50° C. for 5 hours. To the reaction mixture were added ethyl acetate and water, and insolubles were filtered. The filtrate was extracted with ethyl acetate, and the extract was washed with an aqueous saturated sodium bicarbonate solution and a saline, dried with anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=97:3→80:20) to obtain a titled compound (174 mg) having the following physical property values.

1. filtrationwere filtered
2. extractionThe filtrate was extracted with ethyl acetate
3. washthe extract was washed with an aqueous saturated sodium bicarbonate solution
4. dry with materiala saline, dried with anhydrous magnesium sulfate
5. concentrationconcentrated under reduced pressure
6. customThe residue was purified by silica gel column chromatography (hexane:ethyl acetate=97:3→80:20)