反应详情

温度

-20 °C

In nitrogen atmosphere, a THF solution (0.25 mL) of 1.06 M lithium tri-sec-butyl borohydride was dropwise added at −20° C. to a THF solution (3 mL) of (S)-4-[(1R,2R)-2-tert-butyldiphenylsilanyloxy-1-(3,4,5-trifluorophenyl)propyl]-6-methylmorpholin-2,3-dione (95 mg). The resulting reaction solution was stirred at −20° C. for 30 min. To the reaction solution, a 5 N sodium hydroxide aqueous solution (0.03 mL) and a 30% hydrogen peroxide aqueous solution (0.07 mL) were added in this order. The resulting reaction solution was stirred under ice-cooling for 1 hr, and a sodium hydrogensulfite powder (20 mg) was added thereto. The resulting reaction solution was stirred at room temperature for 30 min, and then saturated saline and ethyl acetate were added thereto. The organic layer was separated, washed with saturated saline, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (heptane:ethyl acetate=1:1) to give 93 mg of the title compound. The physical property values of this compound were as follows:

1. customThe resulting reaction solution
2. customThe resulting reaction solution
3. stirringwas stirred under ice-
4. temperaturecooling for 1 hr
5. customThe resulting reaction solution
6. stirringwas stirred at room temperature for 30 min
7. customThe organic layer was separated
8. washwashed with saturated saline
9. dry with materialdried over anhydrous magnesium sulfate
10. concentrationconcentrated under reduced pressure
11. customThe residue was purified by silica gel column chromatography (heptane:ethyl acetate=1:1)