The importance of virus infections and the early successes with some antiviral drugs have prompted the search for new agents, and it has been focused on compounds that are active against herpesviruses, retroviruses, and rhinoviruses. In this paper, 3H-imidazo[4,5-a]acridones are introduced as new antiviral agents against a panel of DNA and RNA viruses, including herpes simplex virus-1 (KOS), herpes simplex virus-2 (G), vaccinia virus, vesicular stomatitis virus, and herpes simplex virus-1 TK-KOS ACV (r). Also, these compounds were cytostatic in the higher micromolar range. 3H-imidazo[4,5-a]acridones were synthesized by Tanasescu reaction of 3H-imidazo[4',5':3,4]benzo [c]isoxazoles in concentrated sulfuric acid containing nitrous acid in excellent yields. The advanced compounds were obtained from the reaction of N-alkyl-5-nitrobenzimidazoles with different aryl acetonitriles under basic conditions. Structures of all newly synthesized compounds were confirmed by IR, H-1 NMR, and mass spectral data. The results indicated that the title compounds have mild-to-potent activities in comparison with their appropriate reference standards.
Synthesis of imidazo[4,5-a]acridones and imidazo[4,5-a]acridines as potential antibacterial agents
AbstractNew imidazo[4,5-a]acridone derivatives were synthesized from the rearrangement of 3H-imidazo[4′,5′:3,4]benzo[c]isoxazoles. New imidazo[4,5-a]acridines were obtained from the reaction of imidazo[4,5-a]acridones in boiling POCl3. All of these compounds exhibited antimicrobial activities comparable to streptomycin as reference drug. Graphical abstract
摘要从3 H-咪唑并[4',5':3,4]苯并[ c ]异恶唑的重排反应合成了新的咪唑并[4,5- a ] ac啶酮衍生物。新咪唑并[4,5一]吖啶从咪唑的反应[4,5-获得一个]吖啶酮在沸腾的POCl 3。所有这些化合物均显示出与链霉素作为参考药物相当的抗菌活性。 图形概要