Selenium in chemistry and biochemistry in comparison to sulfur

LA Wessjohann, A Schneider, M Abbas, W Brandt - 2007 - degruyter.com
What makes selenoenzymes–seen from a chemist's view–so special that they cannot be
substituted by just more analogous or adapted sulfur proteins? This review compiles and …

Amino acid chalcogen analogues as tools in peptide and protein research

L Moroder, HJ Musiol - Journal of Peptide Science, 2020 - Wiley Online Library
The chalcogen elements oxygen, sulfur, and selenium are essential constituents of side
chain functions of natural amino acids. Conversely, no structural and biological function has …

Ring opening reactions of heterocycles with selenium and tellurium nucleophiles

D Tanini, A Capperucci - New Journal of Chemistry, 2019 - pubs.rsc.org
An overview of the preparation and synthetic potentialities of functionalized organoselenium
and organotellurium compounds is presented. Various methods to generate selenated or …

Chiral seleno-amines from indium selenolates. A straightforward synthesis of selenocysteine derivatives

AL Braga, PH Schneider, MW Paixao… - The Journal of …, 2006 - ACS Publications
A simple and efficient procedure for the synthesis of chiral β-seleno-amines derivatives from
a one-pot indium (I) iodide-mediated aziridine ring opening with diorganoyl diselenides has …

Rongalite‐Promoted on Water Synthesis of Functionalised Tellurides and Ditellurides

D Tanini, L Ricci, A Capperucci - Advanced Synthesis & …, 2020 - Wiley Online Library
The on water reaction of sodium telluride with electrophiles has been explored. Na2Te,
generated in situ through the rongalite (sodium hydroxymethanesulfinate)‐promoted …

Zn in ionic liquid: an efficient reaction media for the synthesis of diorganyl chalcogenides and chalcogenoesters

S Narayanaperumal, EE Alberto, K Gul, CY Kawasoko… - Tetrahedron, 2011 - Elsevier
A straightforward and efficient methodology is described to synthesize structurally diverse
diorganyl selenides, sulfides, seleno-and thioesters by using commercially available Zn dust …

Mild and selective silicon-mediated access to enantioenriched 1, 2-mercaptoamines and β-amino arylchalcogenides

D Tanini, C Borgogni, A Capperucci - New Journal of Chemistry, 2019 - pubs.rsc.org
Metal-free ring opening reactions of activated and unactivated aziridines with different silyl
chalcogenides are described. Judicious tuning of the reaction conditions enables the …

Synthesis of 5′-seleno-xylofuranosides

HC Braga, HA Stefani, MW Paixão, FW Santos… - Tetrahedron, 2010 - Elsevier
The synthesis of selenium derivatives of naturally occurring chiral molecules is becoming
increasingly important in recent years. In this context, we describe herein an easy …

Exploring the reactivity of L-tellurocystine, Te-protected tellurocysteine conjugates and diorganodiselenides towards hydrogen peroxide: synthesis and molecular …

A Tripathi, R Deka, RJ Butcher, DR Turner… - New Journal of …, 2022 - pubs.rsc.org
The oxidation reaction of L-tellurocystine,[Te2 {CH2CH (NH3+) COO−} 2](4) with H2O2 in
the presence of HBr resulted in the formation of cyclic, zwitterionic organotellurolate (IV) …

Design, Synthesis, and Conformation–Activity Study of Unnatural Bridged Bicyclic Depsipeptides as Highly Potent Hypoxia Inducible Factor-1 Inhibitors and Antitumor …

K Koike, M Nagano, M Ebihara… - Journal of Medicinal …, 2020 - ACS Publications
By carrying out structural modifications based on the bicyclic peptide structure of
echinomycin, we successfully synthesized various powerful antitumor derivatives. The ring …