反应详情

The compound (39.0 mg) obtained in Example 124-5 was dissolved in anhydrous methanol (1.0 ml) and then added with sodium cyanoborohydride (9.40 mg), acetic acid (1.00 ml), and 1-methyl-2-imidazole carboxaldehyde (12.0 mg), followed by stirring at room temperature for 2 days under a nitrogen atmosphere. After completion of the reaction, the solvent was distilled off and the residue was then dissolved in chloroform. The solution was added with a saturated aqueous sodium bicarbonate solution and stirred. The solution was subjected to extraction with chloroform and the extract was then washed with a saturated aqueous sodium bicarbonate solution and saturated saline solution. The organic layer was dried with anhydrous sodium sulfate and the solvent was then distilled off. The residue was purified through silica gel column chromatography (chloroform/ethyl acetate) and treated with hydrochloric acid, thereby obtaining hydrochloride (16.7 mg) of the subject compound as a white solid.

1. customAfter completion of the reaction
2. distillationthe solvent was distilled off
3. dissolutionthe residue was then dissolved in chloroform
4. additionThe solution was added with a saturated aqueous sodium bicarbonate solution
5. stirringstirred
6. extractionThe solution was subjected to extraction with chloroform
7. washthe extract was then washed with a saturated aqueous sodium bicarbonate solution and saturated saline solution
8. dry with materialThe organic layer was dried with anhydrous sodium sulfate
9. distillationthe solvent was then distilled off
10. customThe residue was purified through silica gel column chromatography (chloroform/ethyl acetate)
11. additiontreated with hydrochloric acid