Fluoro isoflavone containing derivative, monufacturing method and its use
A technology of difluoromethoxy isoflavones and derivatives, which is applied in the field of fluorine-containing isoflavone derivatives, and can solve problems such as technology failure to effectively solve problems
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Embodiment 1
[0067] 4', 5-di-hydroxy-7-difluoromethoxy isoflavone (code 101) and 5-hydroxy-4', 7-di-difluoromethoxy isoflavone (code 102):
[0068] 0.01mol4', 5,7-trihydroxyisoflavone 1 is mixed with 0.03molHCF in 10ml concentration of 40% dioxane and sodium hydroxide aqueous solution at 72°C 2 Cl was reacted for 9 hours, extracted 3 times with ethyl acetate, dried over anhydrous sodium sulfate, and then column chromatographed with ethyl acetate:petroleum ether=1:3 to obtain the target product 4',5-di-hydroxy-7-di The yield of fluoromethoxy isoflavone 2 is 45.2% and that of 5-hydroxy-4',7-bis-difluoromethoxy isoflavone 3 is 52.6%.
[0069] The relevant data are as follows: 4', 5-di-hydroxy-7-difluoromethoxy isoflavone 2 (code 101) MS (EI, 70ev) m / z: 320; IRυ max (cm -1 , KBr): 1662 (C=O), 3319, 3528 (OH); 1 H NMR (300MHz, CDCl 3 ): 6.599 (1H, d, J = 2.4), 6.820 (2H, d, J = 12.0), 6.867 (1H, d, J = 2.4), 7.371 (2H, d, J = 12.0), 7.427 (1H, t, J = 72.8), 8.244 (1H, s), 9.550 (1H, s), 12...
Embodiment 24
[0071] Embodiment 24', the preparation of 5-two-methoxy-7-difluoromethoxy isoflavone (code name 103)
[0072] 0.03mol methyl iodide and 0.01mol 4', 5-two-hydroxyl-7-difluoromethoxy isoflavone 2 were dissolved in 25ml of acetone, and 10 grams of catalyst K was added 2 CO 3 , reacted at 60°C for 4 hours to obtain the target product 4', 5-bis-methoxy-7-difluoromethoxy isoflavone.
[0073] The relevant data are as follows: MS (EI, 70ev) m / z: 348; IRυ max (cm -1 , KBr): 1637 (C=O); 1 H NMR (300MHz, CDCl 3 ): 3.834 (3H, s), 3.970 (3H, s), 6.546 (1H, d, J=2.1), 6.642 (1H, t, J=72.4), 6.724 (1H, d, J=2.1), 6.940 (2H, d, J=8.7), 7.472 (2H, d, J=8.7), 7.811 (1H, s); 19 F NMR (300MHz) - 82.150 (d, J=72.4).
Embodiment 3
[0074] Example 3 4', the preparation of 5-bis-ethoxy-7-difluoromethoxy isoflavone (code 104)
[0075] Replace methyl iodide with 0.03mol bromoethane according to the operation of Example 2 to obtain compound 4', 5-bis-ethoxy-7-difluoromethoxy isoflavone. The relevant data are as follows: MS (EI, 70ev) m / z: 376; IRυ max (cm -1 , KBr): 1613 (C=O); 1 H NMR (300MHz, CDCl 3 ): 1.386-1.572 (6H, m), 4.023-4.181 (4H, m), 6.525 (1H, d, J=2.4), 6.628 (1H, t, J=72.6), 6.699 (1H, d, J= 2.4), 6.931 (2H, d, J=8.4), 7.436 (2H, d, J=8.4), 7.780 (1H, s); 19 F NMR (300MHz)-82.085 (d, J=72.6).
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