Sodium borohydride → HCID 59000916, compound

Participants

Reaction Steps

To a mixed solution of compound (120 mg, 0.182 mmol) obtained in Example 63 in methanol (6 ml) and THF (4 ml) was added sodium borohydride (6.9 mg, 0.182 mmol) under ice cooling. The reaction liquid was stirred at room temperature for 1.5 hours and concentrated under reduced pressure. The residue was distributed between water and ethyl acetate, and the organic layer was extracted. The extract was washed with brine, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by NH-silica gel (Produced by Fuji Silysia Chemical Ltd.) column chromatography (eluent;ethyl acetate), and recrystallized from ethyl acetate and diethylether to give the title compound (81.1 mg, 68%) as colorless crystals.

Provenance & Evidence