Indole-2-carboxylic acid → HCID 86616537, compound

Participants

Reaction Steps

To a solution of 5-[4-(5-aminopyridin-2-yloxy)-3-methylbenzyl]thiazolidine-2,4-dione (150 mg, 0.46 mmol) in DMF (5 mL) were added indole-2-carboxylic acid (74 mg, 0.46 mmol), 1-hydroxybenzotriazole monohydrate (70 mg, 0.46 mmol) and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (110 mg, 0.57 mmol), and the resulting solution was stirred for 5 days at room temperature. This reaction solution was concentrated under reduced pressure. Water was added to the residue, and extracted with ethyl acetate. The ethyl acetate layer was washed with a saturated sodium bicarbonate solution and brine, dried over anhydrous magnesium sulfate, evaporated, and the residue was then purified by silica gel column chromatography (chloroform:methanol=30:1). To the obtained powdery substance was added ethanol, the resulting solution was filtered and the filtrate was washed with ethanol, to thereby yield 100 mg of the title compound.

Provenance & Evidence