反应详情

A reaction was conducted by a similar procedure to that described in Example 52 using triethylamine (0.36 ml), benzoyl chloride (0.10 ml), 5-[4-[6-(4-aminophenoxy)-1-methyl-1H-benzimidazol-2-ylmethoxy]benzyl]thiazolidine-2,4-dione dihydrochloride (400 mg) and anhydrous N,N-dimethylformamide (8 ml). The reaction mixture was concentrated under reduced pressure. The residue was partitioned between ethyl acetate and water. The extract was washed with saturated aqueous sodium chloride solution, dried over anhydrous sodium sulfate and then concentrated. The residue was chromatographed on a silica gel column using ethyl acetate:n-hexane=1:1→2:1→3:1→4:1 as the eluant to afford the title compound (247 mg, white powder, mp 200-204° C.).

1. concentrationThe reaction mixture was concentrated under reduced pressure
2. customThe residue was partitioned between ethyl acetate and water
3. washThe extract was washed with saturated aqueous sodium chloride solution
4. dry with materialdried over anhydrous sodium sulfate
5. concentrationconcentrated
6. customThe residue was chromatographed on a silica gel column