N-phenyl-n-quinoline carboxylic acid compound and its preparation method and medicinal use
The technology of a quinoline carboxylic acid and a compound is applied in the field of drugs related to the treatment of hyperuricemia and gout, and can solve the problems of liver and bone marrow toxicity and allergy, fulminant hepatitis, and limited clinical application.
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Embodiment 1
[0047]
[0048] Reagents and conditions: a) potassium carbonate, potassium iodide, 80°C; b) palladium acetate, cesium carbonate, 4,5-bisdiphenylphosphine-9,9-dimethylxanthene, 110°C, N 2 ; c) sodium hydroxide, ethanol, 50 ℃
[0049] A. Synthesis of Compound IV-1
[0050] Dissolve compound II-1 (1.1g, 10mmol), compound III-1 (1.5g, 10mmol) in 20mL DMF, add potassium carbonate (2.8g, 20mmol), potassium iodide (332mg, 0.2mmol), react at 85°C for 10h . After the TLC monitoring reaction was complete, most of the DMF was evaporated, ethyl acetate and water were added for extraction, the organic phase was dried over anhydrous sodium sulfate, and the solvent was evaporated for column chromatography separation (petroleum ether-ethyl acetate 10:1-6: 1) to obtain compound IV-1, 1.44 g of light yellow oil, yield: 80%. HR-ESI-MS: m / z=179.0974[M+H]+, calculated for C 10 h 12 FN 2 :179.0979.
[0051] B. Synthesis of Compound VI-1
[0052] To compound IV-1 (128mg, 0.7mmol), compoun...
Embodiment 2~19
[0056] Examples 2-19 were prepared according to the synthesis method of Example 1.
Embodiment 2
[0057] Example 2: The synthesis method is similar to Example 1, except that in the first step, m-chloroaniline is used instead of m-fluoroaniline, and the yield is 70%.
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