Water → 5-{1-[N-(3-trifluoromethylphenyl)amino]carbonylmethyl-8-methoxy-2-oxo-1,2,3,4-tetrahydroquinolin-5-ylmethyl}thiazolidine-2,4-dione

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Reaction Steps

500 mg of 5-(1-carboxymethyl-8-methoxy-2-oxo-1,2,3,4-tetrahydroquinolin-5-ylmethyl)thiazolidine-2,4-dione was dissolved in 5 ml of DMF. 0.35 ml of 3-trifluoromethyl aniline, 0.32 g of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride(WSC), and 0.25 g of 1-hydroxybenzotriazole (HOBT) were added to the solution, followed by stirring at room temperature overnight. Water was added to the reaction liquid, and the solid thus obtained was separated by filtration. The solid was dissolved in methylene chloride, washed with sodium chloride solution, and dried over sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (methylene chloride:methanol=50:1), giving 412 mg of 5-{1-[N-(3-trifluoromethylphenyl)amino]carbonylmethyl-8-methoxy-2-oxo-1,2,3,4-tetrahydroquinolin-5-ylmethyl}thiazolidine-2,4-dione.

Provenance & Evidence