Amide compound, preparation method and medical use thereof
A compound, benzamide technology, applied in the field of medicinal chemistry, can solve the problems of low activity of small molecule inhibitors, poor membrane permeability, poor physical and chemical properties of peptidomimetic compounds, etc.
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Embodiment 1
[0042] Synthesis of N-(2-(4-methylpiperazine)-5-cyanophenyl)-2-chloro-3-methoxybenzenesulfonamide (1):
[0043] Dissolve 1.0g (6.4mmol) of 2-fluoro-5-cyanoaniline in anhydrous dichloromethane in a 25ml eggplant-shaped flask, and add 2.3g (9.6mmol) of 2-chloro-3-methyl dropwise at room temperature. Add 0.77ml (9.6mmol) of pyridine to the dichloromethane solution of oxybenzenesulfonyl chloride and react at room temperature overnight. The reaction solution was spin-dried by column chromatography to obtain the intermediate E as a pale yellow solid 0.97 g (yield 48.5%).
[0044] Put 0.2g (0.61mmol) of the above solid in a 25ml eggplant-shaped flask, dissolve it in 5ml DMF, add 0.088ml (0.8mmol) N-methylpiperazine, then add 0.14ml (0.8mmol) DIPEA catalyst, and react at 80℃ After 3 hours, the reaction solution was diluted with 40 ml of ethyl acetate, washed twice with water, and the organic phase was collected by column chromatography to obtain 10.15 g of light yellow solid (yield: 60.1%...
Embodiment 2
[0047] Synthesis of N-(2-Fluoro-4-methoxyphenyl)-2-(4-methylhomopiperazine)-5-cyanophenylsulfonamide (2):
[0048] Using 2-fluoro-5-cyanobenzenesulfonyl chloride, 2-fluoro-4-methoxyaniline, and N-methylhomopiperazine as raw materials, according to the similar method of Example 1, compound 2 was synthesized and obtained in two steps. The rate is 30.5%.
[0049] 1 H NMR(300MHz, CDCl 3 )δ8.22(s,1H),7.91(s,1H),7.81(d,J=7.3Hz,1H), 7.08(d,J=8.4Hz,1H), 6.98(d,J=7.7Hz, 2H), 5.28 (br s, 1H), 3.86 (s, 3H), 3.28 (t, J = 4.3 Hz, 4H), 3.02 (m, 2H), 2.90 (m, 2H), 2.70 (s, 3H) ,1.87(m,2H).
Embodiment 3
[0051] Synthesis of N-(2-(4-methylpiperazine)-5-trifluoromethylphenyl)-2,4,6-trimethylbenzenesulfonamide (3):
[0052] Using 2-fluoro-5-trifluoromethylaniline, 2,4,6-trimethylbenzenesulfonyl chloride and N-methylpiperazine as raw materials, according to the similar method of Example 1, compound 3 was synthesized, two steps The yield was 29.2%.
[0053] 1 H NMR(300MHz, CDCl 3 )δ7.98(d,J=2.5Hz,1H), 7.86(dd,J=8.7,2.5Hz,2H), 7.23(d,J=8.7Hz,1H), 6.98(s,2H),3.01( br s, 4H), 2.73 (br s, 10H), 2.50 (br s, 4H), 2.48 (s, 3H), 2.28 (s, 3H).
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