Heterocyclic compound
a technology of cyclic compound and compound, applied in the field of cyclic compound, to achieve the effect of superior rort inhibitory action
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example 1
2-((3-hydroxy-1,2-oxazol-5-yl)carbonyl)-6-methoxy-N-(4-(trimethylsilyl)phenyl)-1,2,3,4-tetrahydroisoquinoline-1-carboxamide
(Step 1)
[1906]To a 0.5M (4-(bis(trimethylsilyl)amino)phenyl)magnesium chloride / THF solution (100 mL, 50.00 mmol) was added trimethylsilyl chloride (7.03 mL, 55.00 mmol), and the mixture was stirred at room temperature for 30 min. To the reaction mixture was added 0.1N hydrochloric acid with cooling, and the mixture was stirred for 10 min. Then, aqueous sodium hydrogen carbonate solution and ethyl acetate were added thereto, and the organic layer was separated. The organic layer was washed with brine, and dried over magnesium sulfate, and the solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography (solvent gradient; 5→30% ethyl acetate / hexane) to give 4-(trimethylsilyl)aniline (6.51 g, 39.4 mmol, 79%) as a pale yellow oil.
[1907]1H NMR (300 MHz, DMSO-dr): δ 0.09-0.19 (9H, m), 5.14 (2H, s), 6.49-6.60 (2H,...
example 2
6-methoxy-2-((6-oxo-1,6-dihydropyridin-3-yl)carbonyl)-N-(4-(trimethylsilyl)phenyl)-1,2,3,4-tetrahydroisoquinoline-1-carboxamide
[1923]HATU (319 mg, 0.84 mmol) was added to a solution of 6-methoxy-N-(4-(trimethylsilyl)phenyl)-1,2,3,4-tetrahydroisoquinoline-1-carboxamide (248 mg, 0.70 mmol), 6-oxo-1,6-dihydropyridine-3-carboxylic acid (102 mg, 0.73 mmol) and DIEA (244 μL, 1.40 mmol) in DMF (3.5 mL) at room temperature, and the mixture was stirred at room temperature for 15 hr. To the reaction mixture was added water, and the mixture was extracted three times with ethyl acetate. The organic layer was washed with brine, and dried over magnesium sulfate, and the solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography (solvent gradient; 0→8% MeOH / ethyl acetate), and the precipitate was washed with ethyl acetate / IPE to give the title compound (58.2 mg, 0.122 mmol, 17.49%) as white crystals.
[1924]MS(API): Calculated 475.6. Found 47...
example 3
N-(3-fluoro-4-(trimethylsilyl)phenyl)-2-((3-hydroxy-1,2-oxazol-5-yl)carbonyl)-6-methoxy-1,2,3,4-tetrahydroisoquinoline-1-carboxamide
(Step 1)
[1926]A solution of 1-chloro-2-fluoro-4-nitrobenzene (2.63 g, 15 mmol), HMDS (8.12 g, 55.50 mmol) and Pd(PPh3)4 (0.433 g, 0.38 mmol) in xylene (6.5 mL) was stirred under microwave irradiation at 200° C. for 1 hr. To the reaction mixture was added ethyl acetate (about 150 mL), and the insoluble substance was removed by filtration. The filtrate was concentrated under reduced pressure, and the obtained residue was purified by NH-silica gel column chromatography (solvent gradient; 2→5% ethyl acetate / hexane) to give (2-fluoro-4-nitrophenyl)trimethylsilane (3.22 g, 15.10 mmol, 101%) as a yellow oil.
[1927]1H NMR (300 MHz, CDCl3): δ 0.36 (9H, d, J=1.1 Hz), 7.57 (1H, dd, J=8.1, 5.5 Hz), 7.82 (1H, dd, J=8.1, 2.1 Hz), 7.99 (1H, dd, J=8.1, 2.1 Hz).
(Step 2)
[1928]A solution of (2-fluoro-4-nitrophenyl)trimethylsilane (3.22 g, 15.10 mmol) and 10% palladium-carb...
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