A new series of quinoxalinones 6/7-trifluoromethyl or nitro- and 6,7-difluoro substituted bearing various side-chains (alkyl, halogenoalkyl, benzyl and phenyl groups) at C-3 of the ring system was synthesized and submitted to preliminary in vitro evaluation for antibacterial, antifungal, antimycobacterial, anticancer and anti-HIV activities. Results of these screenings showed that compounds 23-28 exhibited a good inhibition activity against various strains of Candida. Compound 24 showed also an interesting in vitro anticancer activity. (C) 1999 Elsevier Science S.A. All rights reserved.
Synthesis of 3-benzylquinoxalin-2(1H)-ones and 4-formyl-3-benzyl-3,4-dihydroquinoxalin-2(1H)-ones from 3-aryloxirane-2-carboxamides via 5-arylidene-2,2-dimethyl-1,3-oxazolidin-4-ones
作者:Vakhid A. Mamedov、Vera L. Mamedova、Victor V. Syakaev、Julia K. Voronina、Essam M. Mahrous、Gul'naz Z. Khikmatova、Dmitry E. Korshin、Leisan R. Shamsutdinova、Il'dar Kh Rizvanov
DOI:10.1016/j.tet.2022.132963
日期:2022.10
A facile and highly efficient strategy has been delineated for the synthesis of 3-benzylquinoxalin-2(1H)-ones and their partially reduced N-formyl derivatives via a Hinsberg-Körner type cyclo-annulation reaction using 5-arylidene-2,2-dimethyl-1,3-oxazolidin-4-ones as pyruvate surrogates. 3-Benzylquinoxalin-2(1H)-ones with a wide range of substituents in both the benzyl moiety and the quinoxaline ring