Water → HCID 9890493, compound

Participants

Reaction Conditions

Reaction Steps

515 mg (1.25 mmol) of Compound 159 obtained in EXAMPLE 159 was dissolved in 10 mL of dimethylformamide, 0.62 mL (6.2 mmol) of piperidine and 0.22 mL (1.25 mmol) of diisopropylethylamine were added, and the mixture was stirred at 50° C. for 2 hours. Water was added to the reaction solution and the mixture was extracted with ethyl acetate. The organic layer was washed with water and an aqueous saturated solution of sodium chloride and dried over anhydrous sodium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (chloroform:acetonitrile=4:1) and recrystallized from ethyl acetate, to give 441 mg of Compound 164 (yield: 77%).

Provenance & Evidence