Heterocyclic derivate tyrosine kinase inhibitor
A compound and cyclic group technology, applied in the field of heterocyclic derivative tyrosine kinase inhibitors, can solve the problems of incomplete mechanism, change of ATP affinity of EGFR kinase region, loss of tumor cell killing effect, etc.
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preparation example 1
[0215] Preparation of Example 1 tert-butyl (4-bromo-3-nitrophenyl) carbamate
[0216]
[0217] Dissolve 3-nitro-4-bromoaniline (5.0g, 23mmol), di-tert-butyl dicarbonate (7.6g, 35mmol), triethylamine (2.32g, 23mmol) in tetrahydrofuran (50mL), heat at 60°C React for 2 hours. Spin to dry the solvent, add water (50mL), extract with ethyl acetate, separate layers, dry the organic phase, concentrate, and separate by column chromatography (petroleum ether:ethyl acetate=10:1) to obtain the product (5.8g, yield 79% ).
preparation example 2
[0218] Preparation Example 2 Preparation of tert-butyl 4-((2-(dimethylamino)ethyl)(methyl)amino)-3-nitrophenyl)carbamate
[0219]
[0220] Tert-butyl (4-bromo-3-nitrophenyl) carbamate (5.8g, 18.3mmol), N 1 ,N 1 ,N 2 - Trimethylethyl-1,2-diamine (3.73g, 36.6mmol), potassium carbonate (5.05g, 36.6mmol) were added to N,N-dimethylacetamide (75mL), 100°C oil bath 8 hours. Ethyl acetate (500 mL) was added, washed with saturated brine (500 mL), separated, the organic phase was dried, concentrated, and column chromatography (dichloromethane:methanol=10:1) gave the product (1.87 g, yield 30%) .
preparation example 3
[0221] Preparation Example 3 Preparation of tert-butyl (3-amino 4-((2-(dimethylamino) ethyl) (methyl) amino)-phenyl) carbamate
[0222]
[0223] Dissolve tert-butyl 4-((2-(dimethylamino)ethyl)(methyl)amino)-3-nitrophenyl)carbamate (1.87 g, 5.5 mmol) in methanol (25 mL) , a palladium carbon catalyst (187 mg) was added to replace the hydrogen, and the mixture was stirred at room temperature for 2 hours. Suction filtration, washing with a small amount of methanol, concentration of the organic phase, and column chromatography (dichloromethane:methanol=10:1) gave the product (1.4g, yield 82%).
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