Inhibitors of bruton's tyrosine kinase
An amino, solvate technology, applied in the field of medicines for the treatment of diseases and disorders, can solve problems such as adverse reactions
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Embodiment 1
[0414] Example 1. General Synthesis of Compounds of Formula I.
[0415]
[0416] where V 1 , V 2 , L, R 1 , R 3 , R 4 , R 11 , n, k have the above meanings.
[0417] General Synthetic Procedures for Compounds of Formula III.
[0418]
[0419] where V 1 , V 2 , L, R 1 , R 3 , R 4 , R 11 , n, k have the above meanings.
[0420] Step 1: Synthesis of compound B(E). In a three-necked flask equipped with a stirrer and thermometer, mix under nitrogen in the indicated order: 20 mL of 1,4-dioxane; (0.002 mol) the necessary compound X1, X2 or X3; 0.759 g (0.003 mol) ) of bis(pinacolate) diboron; 0.190 g (0.0004 mol) of XPhos; 0.588 g (0.006 mol) of dried potassium acetate; 0.067 g (0.0002 mol) of palladium(II) acetate. While stirring, an inert gas (argon or nitrogen) was passed through the mixture for 15 minutes. The resulting reaction was stirred at 80-90° C. for 3-5 hours under inert gas; TLC method was used to ensure completion of the reaction. When the reactio...
Embodiment 2
[0427] Example 2. The general synthesis method of compounds X1, X2, X3.
[0428]
[0429] where A 1 、A 2 、A 3 、A 4 、A 5 、A 6 、A 7 、A8 、A 9 , R 5 has the above meaning.
[0430] Compound X1. In a round bottom flask equipped with a stirrer, thermometer and reflux condenser, mix in the indicated order: 200 mL of DMF, 0.1 mol of the corresponding dihalogenated benzene X1-2, 0.1 mol of the corresponding hydroxypyridine X1-1 and 0.2 mol of cesium carbonate or potassium carbonate. The mixture was stirred at 100° C. for 2-6 hours under inert gas; TLC method was used to ensure completion of the reaction. Then, most of the solvent was distilled off using a rotary evaporator; 200 mL of ethyl acetate was added, and the resulting suspension was filtered through celite. The filtrate was evaporated. The resulting product was purified by column chromatography, eluent: ethyl acetate:methanol (9:1). The product obtained is the compound of formula X1 in 60% to 80% yield.
[0431...
Embodiment 3
[0433] Example 3. Method for Synthesizing Intermediates.
[0434] 1)
[0435]
[0436] BCD-BTK-4-11. In a round bottom flask equipped with a stirrer, thermometer and reflux condenser, dissolve 20.6g (0.158mol) of 2-amino-4-chloropyridine in tert-butanol, add 38.5 g (0.175 mol) of BOC anhydride. The mixture was stirred at 40°C for 5 hours. Excess solvent was distilled off by rotary evaporator at 40°C; the residue was treated with hexane. The resulting suspension was cooled to 0°C and the precipitate was filtered off. Yield: 28 g (77%).
[0437] BCD-BTK-4-10. In a round bottom flask equipped with stirrer, thermometer, and reflux condenser, mix in the order indicated: 135 mL of dry tetrahydrofuran (THF), 20 g (0.169 mol) of N,N,N' , N'-tetramethylethylenediamine and 15.7 g (0.068 mol) of BCD-BTK-4-11. The reaction mixture was cooled to -78°C; 68 mL of 2.5M n-butyllithium in hexanes was added dropwise, maintaining the temperature. Then, the reaction mass was allowed to s...
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