Imidazoles from nitroallylic acetates and α-bromonitroalkenes with amidines: synthesis and trypanocidal activity studies
作者:Elumalai Gopi、Tarun Kumar、Rubem F. S. Menna-Barreto、Wagner O. Valença、Eufrânio N. da Silva Júnior、Irishi N. N. Namboothiri
DOI:10.1039/c5ob01444a
日期:——
Cascade reactions of amidines with nitroallylic acetates and α-bromonitroalkenes provide potentially bioactive imidazoles in good to excellent yields in most cases. While 2,4-disubstituted imidazol-5-yl acetates are formed in the first case, 2,4-disubstituted imidazoles, bearing no substituent at position 5, are the products in the second case. These two series of imidazoles, viz. 2,4,5-trisubstituted
在大多数情况下,am与乙酸烯丙酯和α-溴硝基烯烃的级联反应可提供潜在的具有生物活性的咪唑,其收率良好至极佳。在第一种情况下形成2,4-二取代的咪唑-5-基乙酸盐,而在第二种情况下形成2,4-二取代的咪唑,它们在5位不带取代基。这两个咪唑系列,即。筛选了2,4,5-三取代和2,4-二取代的抗原生动物寄生虫克氏锥虫的活性,锥虫是南美锥虫病的病因。多达三种化合物的活性与标准苯并咪唑一样,而另外两种化合物的活性则高2–3倍,这突出了取代的咪唑的潜力,它很容易从硝基烯烃中获得,并可能是抗寄生虫药。