Acetic Acid → 4-{[(5-ethyl-pyridin-2-ylmethyl)-(1-methyl-1H-imidazol-2-ylmethyl)-amino]-methyl}-N-(4-dipropylaminomethyl-phenyl)-benzamide

Participants

Reaction Steps

The compound (191 mg) obtained in Example 15-5 was dissolved in anhydrous methanol (4.0 ml) and added with sodium cyanoborohydride (41.5 mg), acetic acid (0.50 ml), and the compound (71.4 mg) obtained in Example 16-1 and the whole was stirred at room temperature for 2 days under a nitrogen atmosphere. After completion of the reaction, the solvent was distilled off. The resultant was dissolved in chloroform and added with a 1 mol/l sodium hydroxide aqueous solution, followed by stirring for a while. Then, the solution was subjected to extraction with chloroform and washed with a saturated aqueous sodium hydrogen carbonate solution and a saturated saline solution. The organic layer was dried with anhydrous sodium sulfate and 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 (222 mg) of the subject compound as a white solid.

Provenance & Evidence