Phosphonium salts based on 2H-imidazole: synthesis by direct C–H functionalization of imidazole N-oxides
作者:A. A. Akulov、A. A. Pershin、A. A. Deleva、M. V. Varaksin、V. N. Charushin、O. N. Chupakhin
DOI:10.1007/s11172-023-4074-9
日期:2023.11
A convenient approach towards previously unknown phosphonium salts containing a non-aromatic 2H-imidazole moiety is reported. The approach is based on a direct nucleophilic C(sp2)-H functionalization of 2H-imidazole 1-oxides with triphenylphosphine acting as a nucleophile. Herewith, the heterocyclic N-oxide moiety is utilized as an auxiliary group contributing to an abstraction of C-H proton during
Design and Antioxidant Properties of Bifunctional 2H-Imidazole-Derived Phenolic Compounds—A New Family of Effective Inhibitors for Oxidative Stress-Associated Destructive Processes
作者:Elena L. Gerasimova、Elena R. Gazizullina、Maria V. Borisova、Dinara I. Igdisanova、Egor A. Nikiforov、Timofey D. Moseev、Mikhail V. Varaksin、Oleg N. Chupakhin、Valery N. Charushin、Alla V. Ivanova
DOI:10.3390/molecules26216534
日期:——
higher values for both antioxidant and antiradical capacities. It was demonstrated that in the case of phloroglucinol derivatives, the conjugation effect resulted in a significant increase in the antiradical capacity (ARC) for a whole family of the considered 2H-imidazole-derived phenoliccompounds in comparison with the corresponding unsubstituted phenols. Particularly, conjugation of the polyphenolic