反应详情

370 μL of a methanol solution containing 14 mg of 1-(2-(4-aminopiperidin-1-yl)ethyl)-7-methoxy-N-methyl-2-oxo-1,2-dihydroquinolin-4-carboxamide and 10 μL of acetic acid were added to 3.6 mg of 3-methylbenzaldehyde, and stirred at room temperature for 1 min. To the reaction mixture, 120 μL, of a methanol solution containing 3.8 mg of sodium cyanoborohydride was added, and stirred at the same temperature overnight. After the solvent was removed under reduced pressure, ethyl acetate and aqueous saturated sodium hydrogen carbonate solution were added, the organic layer was separated, and the aqueous layer was extracted with ethyl acetate. The organic layer and extracts were combined, washed with aqueous saturated sodium chloride solution, dried over anhydrous magnesium sulfate, and the solvent was removed under reduced pressure. The residue thus obtained was purified by silica gel column chromatography [Silica Gel; Fuji Silysia Chemical Ltd., Chromatorex-NH, eluent; ethyl acetate: methanol=20:1], to give 7.6 mg of (1-(2-(4-(3-methylbenzylamino)piperidin-1-yl)ethyl)-7-methoxy-N-methyl-2-oxo-1,2-dihydroquinolin-4-carboxamide as a pale yellow foam.

1. additionwas added
2. stirringstirred at the same temperature overnight
3. customAfter the solvent was removed under reduced pressure, ethyl acetate and aqueous saturated sodium hydrogen carbonate solution
4. additionwere added
5. customthe organic layer was separated
6. extractionthe aqueous layer was extracted with ethyl acetate
7. washwashed with aqueous saturated sodium chloride solution
8. dry with materialdried over anhydrous magnesium sulfate
9. customthe solvent was removed under reduced pressure
10. customThe residue thus obtained
11. customwas purified by silica gel column chromatography [Silica Gel; Fuji Silysia Chemical Ltd., Chromatorex-NH, eluent; ethyl acetate: methanol=20:1]