作为医药中间体,用于相关药物分子的合成研究。
医药研究
合成路线 1(1. 合成:5349-24-6)
产率:92%
合成条件:With sodium hydroxide In dichloromethane; water at 20℃; for 2 h; Cooling with ice
实验步骤:将氯乙酰氯(0.2mol,15.9mL)(CAS:79-04-9)在冰浴中缓慢滴加至中等摩尔量的正丁胺(0.2mol,14.83g)的二氯甲烷(50mL)和20%(加入完成后,加入NaOH水溶液作为溶剂,升温至室温,继续搅拌2小时。收集有机相,将5%(质量百分比)的HCl和5%(质量百分比)的NaHCO 3洗涤(3×25mL)有机相干燥并过滤,减压除去溶剂,得到中间体氯乙酰基 - 正丁胺(收率92%)。将中间产物(0.05mol,9.00g)和5,6,7,8-四氢吡啶并[1,2-α]咪唑(0.05mol,6.11g)(CAS:34167-66-3)在乙腈(50mL)中混合加入反应物,回流18H,与乙腈反应,乙酸乙酯操作重结晶,收集产物[4C-imCH 2 CONHBu] Cl(产率89%),阴离子交换树脂得到[4C-imCH 2] CONHBu] OH。
参考文献:
- [1] Patent: CN104326949, 2016, B. Location in patent: Paragraph 0060; 0061; 0063 [2] Patent: WO2007/9083, 2007, A2. Location in patent: Page/Page column 68 [3] ACS Medicinal Chemistry Letters, 2017, vol. 8, # 6, p. 678 - 681 [4] ChemMedChem, 2018, [5] Organic Letters, 2004, vol. 6, # 26, p. 4805 - 4808 [6] Journal of Medicinal Chemistry, 2014, vol. 57, # 18, p. 7590 - 7599 [7] Journal of the American Chemical Society, 1956, vol. 78, p. 2556,2557 [8] Archiv der Pharmazie (Weinheim, Germany), 2002, vol. 335, # 1, p. 15 - 21 [9] Bioorganic and Medicinal Chemistry Letters, 2012, vol. 22, # 1, p. 204 - 206 [10] Green Chemistry, 2012, vol. 14, # 6, p. 1721 - 1727 [11] Bioorganic and Medicinal Chemistry Letters, 2014, vol. 24, # 6, p. 1479 - 1483 [12] Chemical Biology and Drug Design, 2014, vol. 84, # 6, p. 685 - 696 [13] RSC Advances, 2015, vol. 5, # 60, p. 48368 - 48381 [14] Patent: CN106167497, 2016, A. Location in patent: Paragraph 0125; 0126 [15] ACS Medicinal Chemistry Letters, 2017, vol. 8, # 5, p. 527 - 532 [16] Patent: CN106543099, 2017, A. Location in patent: Paragraph 0038 [17] Patent: CN106146414, 2016, A. Location in patent: Paragraph 0150; 0151; 0152 [18] Bulletin of the Korean Chemical Society, 2018, vol. 39, # 2, p. 146 - 155 [19] Patent: CN107556210, 2018, A. Location in patent: Paragraph 0041; 0042 [20] Molecules, 2018, vol. 23, # 5,
合成路线 2(2. 合成:5349-24-6)
产率:99%
合成条件:With 4-toluenesulfonyl azide In tetrahydrofuran at 20 - 25℃;
实验步骤:通用方法:在25℃搅拌下,向相应的β-酮酯1(1.0mmol)和TsN 3(197mg,1.0mmol)的THF(2.0mL)溶液中加入胺(1.1mmol)。然后将反应混合物在室温下搅拌直至原料消耗(通过TLC监测:30分钟至29小时,参见表1和方案4)。接下来,将混合物稀释在5mL CH 2 Cl 2中并在减压下浓缩。在完全除去溶剂后,将残余物在乙醚中研磨,并将得到的混合物再次在减压下浓缩。将最终的固体残余物用己烷(对于酰胺3和4)或9:1己烷/ CH 2 Cl 2混合物(对于酰胺5和6)重复研磨,通过倾析分离出不溶的TsNH 2。过滤得到的上清液,减压浓缩,得到已知的酰胺25 3-6,为高纯度油状物。或者,使用己烷/ EtOAc的梯度混合物作为洗脱液,通过硅胶柱色谱进一步纯化,得到纯产物,产率为80-99%。
参考文献:
- [1] Tetrahedron, 2017, vol. 73, # 31, p. 4549 - 4559