反应详情

To 2 mL of a chloroform solution containing 0.25 g of methyl 1-(2-(4-((tert-butoxycarbonyl)(2,3-dihydro-1,4-benzodioxin-6-ylmethyl)amino)piperidin-1-yl)ethyl)-7-methoxy-2-oxo-1,2-dihydroquinoline-4-carboxylate, 2 mL of trifluoroacetic acid was added and stirred for 16 hours. The solvent was removed under reduced pressure, and aqueous saturated sodium hydrogen carbonate solution and chloroform were added. The organic layer was separated, and the aqueous layer was extracted with chloroform. 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 [eluent; chloroform:methanol=10:1] to give 0.12 g of methyl 1-(2-(4-((2,3-dihydro-1,4-benzodioxin-6-ylmethyl)amino)piperidin-1-yl)ethyl)-7-methoxy-2-oxo-1,2-dihydroquinoline-4-carboxylate as a white solid.

1. additionwas added
2. customThe solvent was removed under reduced pressure, and aqueous saturated sodium hydrogen carbonate solution and chloroform
3. additionwere added
4. customThe organic layer was separated
5. extractionthe aqueous layer was extracted with chloroform
6. washwashed with aqueous saturated sodium chloride solution
7. dry with materialdried over anhydrous magnesium sulfate
8. customthe solvent was removed under reduced pressure
9. customThe residue thus obtained
10. customwas purified by silica gel column chromatography [eluent; chloroform:methanol=10:1]