Substituted 2-indoline ketone derivatives as well as preparation method and uses thereof
A technology of indolinone and its derivatives, which is applied in the field of substituted 2-indolinone derivatives, can solve the problem that cancer cells cannot be completely eliminated, and achieve the effects of high yield of finished products, improved solubility, and simple process
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[0042] One. The preparation of the compound of the present invention
[0043] Synthesis of compound 3:
[0044] Compound 1 (1.51 g, 0.01 mol) and 50 ml of hexamethyldisilamine were mixed and refluxed for 1 hour, the solvent was evaporated under reduced pressure, and the residue was dissolved in 50 ml of anhydrous acetonitrile, and compound 2 (3.18 g, 0.01 mol) and stirred evenly. Add trimethylsilyl trifluoromethanesulfonate (0.7mL, 0.03mol) at 0°C. The mixture was heated to reflux for 1 hour, cooled to room temperature, and 20 ml of saturated sodium bicarbonate solution was slowly added under cooling , after stirring, extract with dichloromethane (3 × 30mL), combine the extracts, wash once with brine, and dry over anhydrous sodium sulfate. Filter, evaporate to dryness, and the residual silica gel column chromatography (eluent: ethyl acetate-n-hexane Alkane 1:3) to obtain compound 3 as an oily liquid (3.1 g, 76%). ESIMS: m / z 410 (M+1).
[0045] Synthesis of compound 5:
[00...
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