Results 11 to 20 of about 3,507 (204)

Genotoxicity and cytotoxicity potential of organoselenium compounds in human leukocytes in vitro

open access: yesSaudi Pharmaceutical Journal, 2023
In the current work, cytotoxicity and genotoxicity of different organoselenium compounds were examined using Trypan blue exclusion and alkaline comet assays with silver staining respectively.
Mohammad Ibrahim   +9 more
doaj   +2 more sources

Organoselenium chemistry [PDF]

open access: yes, 2018
Organoselenium chemistry has been established as a valuable research area in synthetic and medicinal chemistry. After the discovery of the selenoxide elimination reaction in the early 1970s, organoselenium reagents achieved great success in organic synthesis including asymmetric synthesis. More commonly, synthetic transformations such as selenenylation,
Wirth, Thomas
openaire   +2 more sources

Modular Generation of Alkyl Selenyl Radicals for the Synthesis of Alkyl Selenides via a Mechanochemical Approach. [PDF]

open access: yesAdv Sci (Weinh)
We present a mechanochemical, radical‐mediated hydroselenation of alkenes under ambient conditions. This method modularly generates alkyl selenyl radicals from elemental selenium and alkyl (pseudo)halides, utilizing PhSiH3 and H2O as hydrogen atom donors, with the water likely originating from the air and/or trace water present in the reagents ...
He X   +8 more
europepmc   +2 more sources

Recent Advances in the Use of Diorganyl Diselenides as Versatile Catalysts

open access: yesMolecules, 2023
The importance of organoselenium compounds has been increasing in synthetic chemistry. These reagents are well-known as electrophiles and nucleophiles in many organic transformations, and in recent years, their functionality as catalysts has also been ...
Gabriel Pereira da Costa   +3 more
doaj   +1 more source

Selenium-Containing Polysaccharides—Structural Diversity, Biosynthesis, Chemical Modifications and Biological Activity

open access: yesApplied Sciences, 2021
Selenosugars are a group of sugar derivatives of great structural diversity (e.g., molar masses, selenium oxidation state, and selenium binding), obtained as a result of biosynthesis, chemical modification of natural compounds, or chemical synthesis ...
Sandra Górska   +2 more
doaj   +1 more source

Inhibition mechanism of SARS-CoV-2 main protease by ebselen and its derivatives

open access: yesNature Communications, 2021
Ebselen is an organoselenium drug that inhibits the SARS-CoV-2 main protease (Mpro). Here, the authors co-crystallised Mpro with ebselen and an ebselen derivative and observed an enzyme bound organoselenium covalent adduct in the crystal structures ...
Kangsa Amporndanai   +11 more
doaj   +1 more source

Organoselenium Chemistry [PDF]

open access: yes, 2000
Preface ELECTROPHILIC SELENIUM General Introduction Addition Reactions to Double Bonds Selenocyclizations NUCLEOPHILIC SELENIUM Introduction Properties of Selenols and Selenolates Inorganic Nucleophilic Selenium Reagents Organic Nucleophilic Selenium Reagents SELENIUM COMPOUNDS IN RADICAL REACTIONS Homolytic Substitution at Selenium to Generate Radical
  +4 more sources

Unexpected kinetically controlled organoselenium-based isomaleimide: X-ray structure, hirshfeld surface analysis, 3D energy framework approach, and density functional theory calculation

open access: yesFrontiers in Chemistry, 2022
Reduction of 4,4′-diselanediyldianiline (1) followed by the reaction with bromo-4-(bromomethyl)benzene afforded the corresponding 4-((4-bromobenzyl)selanyl)aniline (2) in 85% yield.
Saad Shaaban   +11 more
doaj   +1 more source

Organoselenocyanates Tethered Methyl Anthranilate Hybrids with Promising Anticancer, Antimicrobial, and Antioxidant Activities

open access: yesInorganics, 2022
Novel methyl anthranilate-based organoselenocyanate hybrids were developed, and their structures were confirmed by the state-of-the-art spectroscopic techniques.
Batool Al-Abdallah   +2 more
doaj   +1 more source

Recent Advances in the Synthesis and Antioxidant Activity of Low Molecular Mass Organoselenium Molecules

open access: yesMolecules, 2023
Selenium is an essential trace element in living organisms, and is present in selenoenzymes with antioxidant activity, like glutathione peroxidase (GPx) and thioredoxin reductase (TrxR).
João M. Anghinoni   +7 more
doaj   +1 more source

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