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)。