Acetic Acid → HCID 11677629, compound

Participants

Reaction Steps

The compound (317 mg) obtained in Example 23-7 was dissolved in anhydrous methanol (6.0 ml) and added with sodium cyanoborohydride (74.8 mg), acetic acid (1.00 ml), and 1-methyl-2-imidazole carboxaldehyde (105 mg) and the whole was stirred overnight at room temperature under a nitrogen atmosphere. After completion of the reaction, the solvent was distilled off and the resultant was dissolved in chloroform and added with a 1 mol/l sodium hydroxide aqueous solution. The whole was stirred for a while and subjected to extraction with chloroform, followed by washing with a saturated aqueous sodium hydrogen carbonate solution and a saturated saline solution. The organic layer obtained was dried with anhydrous sodium sulfate. The solvent was distilled off. The residue was purified through silica gel column chromatography (chloroform/ethyl acetate) and treated with hydrochloric acid, thereby obtaining a hydrochloride (318 mg) of the subject compound as a white solid.

Provenance & Evidence