Amino hexatomic ring derivative and application thereof to medicine
An alkyl and pharmaceutical technology, applied in the field of amino six-membered ring derivatives and its application in medicine, can solve problems such as the burden of diabetes
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[0267] (2R,3R,4R,5S)-2-(2,5-difluorophenyl)-4-fluoro-5-(2-(methylsulfonyl)pyrrolo[3,4-c]pyrazole- 5(2H,4H,6H)-yl)tetrahydro-2H-pyran-3-amine (compound 1)
[0268] (2R,3R,4R,5S)-2-(2,5-difluorophenyl)-4-fluoro-5-(2-(methylsulfonyl)pyrrolo[3,4-c]pyrazol-5(2H,4H,6H) -yl)tetrahydro-2H-pyran-3-amine
[0269]
[0270] The first step: tert-butyl ((2R,3R,4R)-2-(2,5-difluorophenyl)-4-fluoro-5-carbonyltetrahydro-2H-pyran-3-yl)aminomethyl Ester (1b)
[0271] tert-butyl((2R,3R,4R)-2-(2,5-difluorophenyl)-4-fluoro-5-oxotetrahydro-2H-pyran-3-yl)carbamate
[0272] Under nitrogen protection, intermediate 1 (1.5g, 4.58mmol), trans-4-hydroxy-D-proline hydrochloride (77mg, 0.46mmol) and anhydrous sodium carbonate (728mg, 6.78mmol) were added to tetrahydrofuran (20 mL), stirred at room temperature for 10 minutes, added N-fluorobisbenzenesulfonamide (1.44 g, 4.58 mmol) at this temperature, and continued the reaction for 48 hours. Ethyl acetate (40mL) was added to the reaction solution, stir...
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