反应详情

To a cold (0° C.) solution of 2-amino-6-[2-(benzyloxy)-6-hydroxyphenyl]-4-(3-piperidinyl)nicotinaldehyde hydrochloride (0.100 g, 0.227 mmol) in methanol was added NaBH3CN (0.040 mL, 0.682 mmol) under an argon atmosphere. The mixture was stirred at room temperature for 12 hrs and concentrated under reduced pressure. The residue was extracted with ethyl acetate and water. The separated organic phase was washed with saturated aqueous NaHCO3 solution and brine, dried over Na2SO4, filtered and concentrated under reduced pressure. The resulting residue was purified by column chromatography on silica gel (hexane/ethyl acetate=2/1) to give 2-(6-amino-5,9-diazatricyclo[7.3.1.02,7]trideca-2,4,6-trien-4-yl)-3-(benzyloxy)phenol as a white solid.

1. concentrationconcentrated under reduced pressure
2. extractionThe residue was extracted with ethyl acetate and water
3. washThe separated organic phase was washed with saturated aqueous NaHCO3 solution and brine
4. dry with materialdried over Na2SO4
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure
7. customThe resulting residue was purified by column chromatography on silica gel (hexane/ethyl acetate=2/1)