反应详情

To a dry roundbottom flask add 9-chloro-3-methyl-5-piperidin-3-yl-5H-isoxazolo[4,3-c]quinolin-4-one hydroiodide (50 mg, 0.11 mmol), (S)-3-hydroxy-3-phenylpropanoic acid (22 mg, 0.13 mmol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (26 mg, 0.13 mmol), 1-hydroxy-7-azabenzotriazole (18 mg, 0.13 mmol), 4-dimethylamino-pyridine (1 mg, 0.01 mmol), and dimethylformamide (3 mL). Stir the reaction under nitrogen, and add triethylamine (30 μL, 0.22 mmol) dropwise. Stir the solution under nitrogen at room temperature overnight. Concentrate the solution and dissolve in 20% isopropanol/chloroform, wash with 1N HCl, 1N sodium thiosulfate, saturated aqueous sodium bicarbonate solution, brine, dry over magnesium sulfate and concentrate. Purify by flash chromatography on silica gel (eluting with 0–1.5% methanol/chloroform) to give 34.5 mg of the title compound as a white solid, 66% yield. 1H NMR: consistent with structure. MS (ion spray) 466 (M+).

1. customthe reaction under nitrogen
2. stirringStir the solution under nitrogen at room temperature overnight
3. concentrationConcentrate the solution
4. dissolutiondissolve in 20% isopropanol/chloroform
5. washwash with 1N HCl, 1N sodium thiosulfate, saturated aqueous sodium bicarbonate solution, brine
6. dry with materialdry over magnesium sulfate
7. concentrationconcentrate
8. customPurify by flash chromatography on silica gel (eluting with 0–1.5% methanol/chloroform)