Quinoline derivatives and their use as mycobacterial inhibitors
一种化合物、药用酸的技术,应用在喹啉衍生物及其作为分枝杆菌抑制剂的应用领域,能够解决昂贵、药物有毒性、边缘等问题
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Embodiment A1
[0121] Preparation of intermediate compound 1
[0122]
[0123] Phenylpropionyl chloride (0.488mol) was added dropwise to 4-bromoaniline (0.407mol) at room temperature in Et 3 N (70ml) and CH 2 Cl 2 (700ml), and the mixture was stirred at room temperature overnight. This mixture was poured into water and concentrated NH 4 OH, and CH 2 Cl 2 extraction. The organic layer was dried (MgSO 4 ), filtered and the solvent was evaporated. The residue was crystallized from ether. The residue (119.67 g) was placed in CH 2 Cl 2 medium and washed with HCl 1N. The organic layer was dried (MgSO 4 ), filtered and the solvent was evaporated. Yield: 107.67 g of intermediate compound 1.
[0124] Preparation of intermediate compound 9
[0125]
[0126] Thus, using the same procedure as intermediate compound 1, but employing 4-methylphenylpropionyl chloride, intermediate compound 9 was prepared.
Embodiment A2
[0128] Preparation of intermediate compound 2
[0129]
[0130] This reaction was performed 2 times. POCl at 10°C 3 (1.225mol) was added dropwise to DMF (0.525mol). Intermediate compound 1 (prepared according to Al) (0.175 mol) was then added at room temperature. The mixture was stirred overnight at 80 °C, poured onto ice, and washed with CH 2 Cl 2 extraction. The organic layer was dried (MgSO 4 ), filtered and the solvent was evaporated. The product was used without further purification. Yield: (77.62 g; Yield = 67%).
[0131] Preparation of intermediate compound 10
[0132]
[0133] Therefore, according to the same method as intermediate compound 2, intermediate compound 10 was prepared from intermediate compound 9 (prepared according to A1).
Embodiment A3
[0135] Preparation of intermediate compound 3
[0136]
[0137] Intermediate compound 2 (prepared according to A2) (0.233 mol) in CH 3 A solution of ONa (30%) in methanol (222.32ml) and a mixture in methanol (776ml) were stirred and refluxed overnight, then poured onto ice and washed with CH 2 Cl 2 extraction. The organic layer was separated and dried (MgSO 4 ), filtered and the solvent was evaporated. The residue was purified by silica gel column chromatography (eluent: CH 2 Cl 2 / cyclohexane 20 / 80, then 100 / 0; 20-45 μm). Pure fractions were collected and the solvent was evaporated. Yield: 25 g of intermediate compound 3 (yield = 33%; mp. 84°C) as a white powder.
[0138] Preparation of intermediate compound 11
[0139]
[0140] Thus, according to the same method as intermediate compound 3, intermediate compound 11 was prepared from intermediate compound 10 (prepared according to A2).
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