Novel thienopyridine compounds and use thereof in medicine
A compound and pyridine technology, applied in the field of new thienopyridine compounds and their medical applications, can solve problems such as low therapeutic efficacy, increased bleeding risk, and increased risk of massive bleeding
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Embodiment 1
[0069] Example 1 5-(2-methylene-3,5,6-trimethylpyrazine)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine hydrochloride (compound I 1 )Synthesis
[0070] Dissolve 1.5g (11mmol) of 2,3,5,6-tetramethylpyrazine in 50mL of carbon tetrachloride, add 2.0g (11mmol) of NBS and a catalytic amount of benzoyl peroxide, reflux reaction under light, overnight React for 8-16 hours, monitor the reaction by TLC (ethyl acetate / petroleum ether=1 / 1), terminate the reaction after the raw materials disappear, cool to below 50°C, filter with suction, concentrate the filtrate under reduced pressure, and separate by column chromatography to obtain a white solid 2-Bromomethyl-3,5,6-trimethylpyrazine.
[0071] 1.75 g (10 mmol) of tetrahydrothienopyridine (THTP) hydrochloride was dissolved in 30 mL of dichloromethane, 1.2 equivalents of triethylamine (TEA) was added, and the reaction was stirred at 25° C. for one hour to obtain a mixed solution. Add 2.14g (10mmol) 2-bromomethyl-3,5,6-trimethylpyrazine, 2.0 eq...
Embodiment 2
[0072] Example 2 5-(2-methylenepyrazine)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine hydrochloride (compound I 2 )Synthesis
[0073] Dissolve 1.0g (11mmol) 2-methylpyrazine in 50mL carbon tetrachloride, add 2.0g (11mmol) NBS and a catalytic amount of benzoyl peroxide, reflux reaction under light, react overnight for 8-16 hours, TLC Monitor the reaction (ethyl acetate / petroleum ether=1 / 1), stop the reaction after the raw materials disappear, cool to below 50°C, filter with suction, concentrate the filtrate under reduced pressure, and separate by column chromatography to obtain light yellow liquid 2-bromomethylpyridine Zinc.
[0074] 1.75 g (10 mmol) of tetrahydrothienopyridine (THTP) hydrochloride was dissolved in 30 mL of dichloromethane, 1.2 equivalents of triethylamine (TEA) was added, and the reaction was stirred at 25° C. for one hour to obtain a mixed solution. Add 1.71g (10mmol) 2-bromomethylpyrazine, 2.0 equivalents of TEA and catalytic amount of NaI to the above mixed so...
Embodiment 3
[0075] Example 3 5-(2-methylenepyridine)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine hydrochloride (compound I 3 )Synthesis
[0076] Dissolve 1.0g (11mmol) 2-picoline in 50mL carbon tetrachloride, add 2.0g (11mmol) NBS and a catalytic amount of benzoyl peroxide, reflux reaction under light, react overnight for 8-16 hours, monitor by TLC Reaction (ethyl acetate / petroleum ether=1 / 1), the reaction was terminated after the raw materials disappeared, cooled to below 50°C, filtered with suction, concentrated the filtrate under reduced pressure, and separated by column chromatography to obtain 2-bromomethylpyridine as a yellow liquid.
[0077] 1.75 g (10 mmol) of tetrahydrothienopyridine (THTP) hydrochloride was dissolved in 30 mL of dichloromethane, 1.2 equivalents of triethylamine (TEA) was added, and the reaction was stirred at 25° C. for one hour to obtain a mixed solution. Add 1.70g (10mmol) bromomethylpyridine, 2.0 equivalents of triethylamine and catalytic amount of sodium iodide...
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