Propanal → HCID 10432329, compound

Participants

Reaction Steps

The compound (48.8 mg) obtained in Example 32-2 was dissolved in anhydrous methanol (1.0 ml) and then added with sodium cyanoborohydride (16.2 mg), trimethyl orthoformate (21.1 μl), propionaldehyde (13.9 μl), followed by stirring overnight at room temperature under a nitrogen atmosphere. After completion of the reaction, the solvent was distilled off and the residue was then dissolved in chloroform. A saturated aqueous sodium bicarbonate solution was added to the solution, followed by stirring. The resultant solution was subjected to extraction with chloroform and washed with a saturated aqueous sodium bicarbonate solution and saturated saline solution, and then the organic layer was dried with anhydrous sodium sulfate. The solvent was distilled off and the residue was then treated with hydrochloric acid. Subsequently, the treated product was purified through silica gel column chromatography (chloroform/methanol/water), thereby obtaining hydrochloride (33.2 mg) of the subject compound as a white solid.

Provenance & Evidence