Various N-substituted benzisoselenazol-3(2H)-ones and their non-selenium-containing analogues have been synthesized and tested against selected viruses (HHV-1, EMCV and VSV) to determine the extent to which selenium plays a role in antiviral activity. The data presented here show that the presence of selenium is crucial for the antiviral properties of benzisoselenazol-3(2H)-ones since their isostructural analogues having different groups but lacking selenium either did not show any antiviral activity or their activity was substantially lower. The open-chain analogues of benzisoselenazol-3(2H)-ones—diselenides also exhibited high antiviral activity while selenides and disulfides were completely inactive towards model viruses.
Intramolecular Homolytic Substitution with Amidyl Radicals: A Free-Radical Synthesis of Ebselen and Related Analogues
作者:Mei C. Fong、Carl H. Schiesser
DOI:10.1021/jo970019t
日期:1997.5.1
H)-ones (1) in yields of 81-91% (R = primary alkyl) and 45% (R = c-Hex). Presumably, these transformations involve formation of amidyl radicals 2 which undergo subsequent intramolecular homolytic substitution at the selenium atom with expulsion of a benzyl radical. PTOC imidate esters derived from 2-(benzylseleno)benzanilide (6, R = Ph) and 2-(benzylseleno)-N-tert-butylbenzamide (6, R = t-Bu) were
Different N-substituted benzisoselenazol-3(2H)-ones, analogues of ebselen were designed as newantiviral and antimicrobial agents. We report their synthesis, chemical properties as well as study on biological activity against broad spectrum of pathogenic microorganisms (Staphylococcus aureus, Staphylococcus simulans, Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Candida albicans
Highly efficient synthesis and antioxidant capacity of N-substituted benzisoselenazol-3(2H)-ones
作者:Agata J. Pacuła、Jacek Ścianowski、Krzysztof B. Aleksandrzak
DOI:10.1039/c4ra08631g
日期:——
A new, general one step synthesis of N-substituted benzisoselenazol-3(2H)-ones based on the reaction of o-iodobenzamides with lithium diselenide, is described. A series of alkyl and aryl derivatives was obtained in high yields (up to 98%). Their GPx-like antioxidant activity, tested by NMR, showed a significantly higher activity than ebselen.
A new method for creating Se–N intramolecular bonds using UV radiation
作者:Agata J. Pacuła-Miszewska、Magdalena Obieziurska-Fabisiak、Anna Laskowska、Halina Kaczmarek、Jacek Ścianowski
DOI:10.1039/d2nj03513h
日期:——
The irradiation of diaryl diselenides bearing amido groups using UV light of 254 nm wavelength leads to their rapid and quantitative conversion to form the benzisoselenazolone core through free radical Se–N bond formation. The developed protocol was utilized for a series of diversified substrates under mild reaction conditions.