Results 91 to 100 of about 4,617 (218)

Cyanines Substituted on the Polymethine Chain: Synthesis, Resulting Properties, and Application Use Cases

open access: yesChemPlusChem, Volume 90, Issue 12, December 10, 2025.
Cyanines are small‐molecule dyes with a polymethine chain. For various applications, their properties can be tuned by varying not only chain length and auxochrome end groups but also the substituents on the polymethine chain. Here, we review the synthesis, properties, and applications of cyanines with substituents on the polymethine chain.
Rebecca Strada   +2 more
wiley   +1 more source

Applications of N─F─Based Reagents in the Synthesis of Organochalcogen Compounds

open access: yesAsian Journal of Organic Chemistry, Volume 14, Issue 12, December 2025.
Herein, we provide a comprehensive review of recent advances in synthetic strategies to access organochalcogen‐decorated compounds using N─F reagents as efficient oxidants for converting chalcogen–chalcogen bonds into electrophilic chalcogen‐based species.
Thiago Anjos   +5 more
wiley   +1 more source

Chemoprevention of Carcinogenesis by Organoselenium Compounds.

open access: yesJournal of Health Science, 2000
The modifying effects of novel synthesized oragnoseleniums on carcinogenesis have been examined in several organs. p-Methoxybenzeneselenol (MBS), benzylselenocyanate (BSC) and 1, 4-phenylenebis(methylene)-selenocyanate (p-XSC) have been synthesized, respectively.
Shigeyuki Sugie   +2 more
openaire   +2 more sources

Epigenotoxicity: Decoding the epigenetic imprints of genotoxic agents and their implications for regulatory genetic toxicology

open access: yesEnvironmental and Molecular Mutagenesis, Volume 66, Issue S2, Page 166-180, December 2025.
Abstract Regulatory genetic toxicology focuses on DNA damage and subsequent gene mutations. However, genotoxic agents can also affect epigenetic marks, and incorporation of epigenetic data into the regulatory framework may thus enhance the accuracy of risk assessment.
Roger Godschalk   +4 more
wiley   +1 more source

Selenium induced selenocysteine methyltransferase gene expression and antioxidant enzyme activities in Astragalus chrysochlorus [PDF]

open access: yes, 2016
Astragalus sp. are used in folk medicine because of their biological activities and are known for the ability to accumulate high levels of selenium (Se).
Neslihan Turgut-Kara   +2 more
core   +2 more sources

Crystal structure of 1-bromo-2-(phenylselenyl)benzene

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
In the title compound, C12H9BrSe, the Se atom exhibits a bent geometry, with a C—Se—C bond angle of 99.19 (6)°. The ortho Se and Br atoms are slightly displaced from opposite faces of the mean plane of the benzene ring [by 0.129 (2) and 0.052 (2) Å ...
Bronte J. Charette, Jamie S. Ritch
doaj   +1 more source

New Chiral Ebselen Analogues with Antioxidant and Cytotoxic Potential

open access: yesMolecules, 2017
New chiral camphane-derived benzisoselenazol-3(2H)-ones and corresponding diselenides have been synthetized using a convenient one-pot procedure. Se-N bond was efficiently converted to an Se-Se bond, which could also be easily re-oxidized to the initial ...
Agata J. Pacuła   +7 more
doaj   +1 more source

Isoselenocyanates derived from Boc/Z-amino acids: Synthesis, isolation, characterization, and application to the efficient synthesis of unsymmetrical selenoureas and selenoureidopeptidomimetics [PDF]

open access: yes, 2010
Isoselenocyanates derived from Boc/Z-amino acids are prepared by the reaction of the corresponding isonitriles with selenium powder in presence of triethylamine at reflux.
Chennakrishnareddy, G.   +5 more
core   +1 more source

Ajo selenizado: ¿un alimento funcional futuro o actual? [PDF]

open access: yes, 2012
In the last years, functional foods have awakened consumer, scientific and business interest. A commonly found vegetable in such kind of foods includes garlic (Allium sativum).
Escudero, Leticia B.   +4 more
core  

Selenium in biology: Facts and medical perspectives [PDF]

open access: yes, 2000
Several decades after the discovery of setenium as an essential trace element in vertebrates approximately 20 eukaryotic and more than 15 prokaryotic selenoproteins containing the 21(st) proteinogenic amino acid, selenocysteine, have been identified ...
Brigelius-Flohé, Regina   +5 more
core   +1 more source

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