反应详情

The compound (100.0 mg) obtained in Example 47-3 was dissolved in methanol (3.0 ml). Then, the solution was added with 1H-[1,2,4]-triazol-3-carboxaldehyde (51.0 mg) synthesized by the method described in Heterocycles (vol. 15, No. 1, page 1981) and sodium cyanoborohydride (30.0 mg). Subsequently, the solution was adjusted to pH 5 with acetic acid and stirred at room temperature for 17 hours. After completion of the reaction, the reaction solution was added with a 1 mol/l sodium hydroxide aqueous solution and then subjected to separation/extraction with a mixture solution of chloroform/methanol. 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/methanol) and treated with hydrochloric acid, thereby obtaining hydrochloride (37.4 mg) of the subject compound as a white solid.

1. customsynthesized by the method
2. customAfter completion of the reaction
3. extractionsubjected to separation/extraction with a mixture solution of chloroform/methanol
4. dry with materialThe organic layer was dried with anhydrous sodium sulfate
5. distillationthe solvent was then distilled off
6. customThe residue was purified through silica gel column chromatography (chloroform/methanol)
7. additiontreated with hydrochloric acid