A general synthesis of arylindoles and (1-arylvinyl)carbazoles via a one-pot reaction from N-tosylhydrazones and 2-nitro-haloarenes and their potential application to colon cancer
A general synthesis of arylindoles and (1-arylvinyl)carbazoles via a one-pot reaction from N-tosylhydrazones and 2-nitro-haloarenes and their potential application to colon cancer
The synthesis of 2- and 3-aryl indoles and 1,3,4,5-tetrahydropyrano[4,3-b]indoles and their antibacterial and antifungal activity
作者:Tlabo C. Leboho、Joseph P. Michael、Willem A.L. van Otterlo、Sandy F. van Vuuren、Charles B. de Koning
DOI:10.1016/j.bmcl.2009.07.091
日期:2009.9
series of 2- and 3-aryl substituted indoles and two 1,3,4,5-tetrahydropyrano[4,3-b]indoles were synthesized from indole and 5-methoxyindole. The 2-aryl indoles were synthesized from the 1-(phenylsulfonyl)indole derivatives using magnesiation followed by iodination. The 2-iodinated compounds were then subjected to Suzuki–Miyaura reactions. In addition, the 3-aryl indoles were made from the corresponding
由吲哚和5-甲氧基吲哚合成了一系列2-和3-芳基取代的吲哚和两个1,3,4,5-四氢吡喃并[4,3- b ]吲哚。使用镁化然后碘化由1-(苯磺酰基)吲哚衍生物合成2-芳基吲哚。然后将2-碘代化合物进行Suzuki-Miyaura反应。另外,使用Suzuki-Miyaura反应由相应的3-溴吲哚制备3-芳基吲哚。1,3,4,5-四氢吡喃并[4,3- b ]吲哚也由1-(苯磺酰基)吲哚通过镁化然后用烯丙基溴处理而合成。然后将产物转化为[2-烯丙基-1-(苯磺酰基)-1 H-吲哚-3-基]甲醇,将其暴露于Hg(OAc)2和NaBH4得到四氢吡喃并[4,3- b ]吲哚。许多2-和3-芳基吲哚显示出值得注意的抗菌活性,化合物13a对革兰氏阳性微生物蜡样芽胞杆菌显示出最显着的活性(3.9μg/ mL)。
Iron-catalyzed reductive cyclization of nitroarenes: Synthesis of aza-heterocycles and DFT calculations
strategies for hydrogentransferreduction is increasing, along with the need for more elaborate heterocyclic platforms. Within this context, we develop a new approach for substituted dihydrobenzo[c]carbazoles and indoles. These compounds were synthesized through an iron-catalyzed hydrogentransferreduction of nitroarenes, followed by intramolecular cyclization. This transformation involves using a Knölker-type
随着对更精细的杂环平台的需求,对环境友好的氢转移还原策略的研究正在增加。在此背景下,我们开发了一种用于取代二氢苯并 [ c ] 咔唑和吲哚的新方法。这些化合物是通过铁催化的硝基芳烃氢转移还原,然后进行分子内环化合成的。这种转化涉及使用 Knölker 型催化剂,Cs 2 CO 3作为碱,苯甲醇作为不昂贵且低挥发性的氢供体。通过应用该策略,我们合成了 30 个氮杂杂环化合物的例子,收率中等至极佳。此外,DFT 计算表明通路反应可以遵循阴离子机制。