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14 Results Found

  • Communication
  • Open Access
11 Citations
4,133 Views
8 Pages

Oxidation of Thiol Using Ionic Liquid-Supported Organotelluride as a Recyclable Catalyst

  • Aya Mihoya,
  • Shinichi Koguchi,
  • Yuga Shibuya,
  • Minato Mimura and
  • Makoto Oba

4 April 2020

Organotellurium compounds are known to be useful oxidation reagents. For developing a recoverable and reusable reagent, this paper describes the use of an ionic liquid (IL) support for the organotellurium reagent and its application as a recyclable c...

  • Article
  • Open Access
5 Citations
3,021 Views
11 Pages

Effects of Substitution on Cytotoxicity of Diphenyl Ditelluride in Cultured Vascular Endothelial Cells

  • Takato Hara,
  • Takahiro Okazaki,
  • Tamayo Hashiya,
  • Kyohei Nozawa,
  • Shuji Yasuike,
  • Jyoji Kurita,
  • Chika Yamamoto,
  • Noriaki Hamada and
  • Toshiyuki Kaji

29 September 2021

Among organic–inorganic hybrid molecules consisting of organic structure(s) and metal(s), only few studies are available on the cytotoxicity of nucleophilic molecules. In the present study, we investigated the cytotoxicity of a nucleophilic organotel...

  • Article
  • Open Access
15 Citations
4,604 Views
14 Pages

Evaluation of the Organotellurium Compound AS101 for Treating Colistin- and Carbapenem-Resistant Klebsiella pneumoniae

  • Tsung-Ying Yang,
  • Hao-Yun Kao,
  • Po-Liang Lu,
  • Pei-Yu Chen,
  • Shu-Chi Wang,
  • Liang-Chun Wang,
  • Ya-Ju Hsieh and
  • Sung-Pin Tseng

12 August 2021

Colistin- and carbapenem-resistant Enterobacteriaceae cases are increasing at alarming rates worldwide. Drug repurposing is receiving greater attention as an alternative approach in light of economic and technical barriers in antibiotics research. Th...

  • Article
  • Open Access
16 Citations
6,572 Views
12 Pages

21 February 2014

Ammonium trichloro[1,2-ethanediolato-O,O']-tellurate (AS101) is the most important synthetic Te compound from the standpoint of its biological activity. It is a potent immunomodulator with a variety of potential therapeutic applications and antitumor...

  • Article
  • Open Access
1 Citations
1,905 Views
11 Pages

An Efficient Method for the Selective Syntheses of Sodium Telluride and Symmetrical Diorganyl Tellurides and the Investigation of Reaction Pathways

  • Chorong Kim,
  • Yoo Jin Lim,
  • Ye Eun Kim,
  • Akula S. N. Murthy,
  • Hyunsung Cho,
  • Hyejeong Lee,
  • Myung-Sook Park and
  • Sang Hyup Lee

15 November 2024

Studies on organotellurium compounds have not been extensively conducted due to a lack of tolerable synthetic methods, difficult isolation processes, and their chemical instabilities. Overcoming these hurdles, we developed an efficient and mild metho...

  • Review
  • Open Access
6 Citations
13,926 Views
15 Pages

12 March 2009

Laser radiation-induced decomposition of gaseous organic selenides and tellurides resulting in chemical deposition of nanostructured materials on cold surfaces is reviewed with regard to the mechanism of the gas-phase decomposition and properties of...

  • Article
  • Open Access
5 Citations
2,245 Views
13 Pages

13 March 2021

Multiple supramolecular functionalities of cyclic α-alkoxy tellurium-trihalides (including Te---O, Te---X (X = Br, I) and Te---π(C=C) supramolecular synthons) afford rich crystal packing possibilities, which consequently results in polymorphism or Z’...

  • Article
  • Open Access
12 Citations
3,133 Views
17 Pages

29 July 2020

A novel series of organic tellurium compounds based on pyrazole derivatives with a general formula of ArTeBr3 and Ar2TeBr2 [Ar = 2-(3-(4-substituted phenyl)-5-(2-chlorophenyl)-1H-pyrazol-1-yl)-3,5-dinitrophenyl] were obtained by the refluxing of corr...

  • Article
  • Open Access
4 Citations
2,564 Views
10 Pages

17 March 2022

A slight modification of the synthetic procedure resulted in a new (Cc) polymorph of vinylic tellurium-trichloride Z-Cl(Ph)C=C(Ph)TeCl3 (1, β-form) which is stabilized by Te⋯Cl chalcogen bonds, assembling its molecules into the zigzag chai...

  • Article
  • Open Access
24 Citations
8,568 Views
24 Pages

Xerogel-Sequestered Silanated Organochalcogenide Catalysts for Bromination with Hydrogen Peroxide and Sodium Bromide

  • Caitlyn M. Gatley,
  • Lisa M. Muller,
  • Meredith A. Lang,
  • Eduardo E. Alberto and
  • Michael R. Detty

26 May 2015

While H2O2 is a powerful oxidant, decomposing into environmentally benign H2O and O2, a catalyst is often required for reactions with H2O2 to proceed at synthetically useful rates. Organotellurium and organoselenium compounds catalyze the oxidation o...

  • Article
  • Open Access
6 Citations
4,107 Views
9 Pages

Transition-Metal-Free Synthesis of Unsymmetrical Diaryl Tellurides via SH2 Reaction of Aryl Radicals on Tellurium

  • Yuki Yamamoto,
  • Fumiya Sato,
  • Qiqi Chen,
  • Shintaro Kodama,
  • Akihiro Nomoto and
  • Akiya Ogawa

26 January 2022

Although diaryl tellurides are parent organotellurium compounds, their synthesis methods, especially for unsymmetrical ones, are limited. This may be due to the instability of diaryl tellurides and their synthesis intermediates under reaction conditi...

  • Article
  • Open Access
33 Citations
7,571 Views
13 Pages

Selenium- and Tellurium-Based Antioxidants for Modulating Inflammation and Effects on Osteoblastic Activity

  • Xi Lu,
  • Gemma Mestres,
  • Vijay Pal Singh,
  • Pedram Effati,
  • Jia-Fei Poon,
  • Lars Engman and
  • Marjam Karlsson Ott

14 February 2017

Increased oxidative stress plays a significant role in the etiology of bone diseases. Heightened levels of H2O2 disrupt bone homeostasis, leading to greater bone resorption than bone formation. Organochalcogen compounds could act as free radical trap...

  • Article
  • Open Access
1 Citations
2,279 Views
14 Pages

Stabilization of 2-Pyridyltellurium(II) Derivatives by Oxidorhenium(V) Complexes

  • Felipe Dornelles da Silva,
  • Maximilian Roca Jungfer,
  • Adelheid Hagenbach,
  • Ernesto Schulz Lang and
  • Ulrich Abram

18 April 2023

Zwitterionic compounds such as pyridine-containing tellurenyl compounds are interesting building blocks for heterometallic assemblies. They can act as ambiphilic donor/acceptors as is shown by the products of reactions of the zwitterions HpyTeCl2 or...

  • Article
  • Open Access
13 Citations
3,198 Views
20 Pages

Antiviral Effect of 5′-Arylchalcogeno-3-aminothymidine Derivatives in SARS-CoV-2 Infection

  • Amanda Resende Tucci,
  • Raquel Mello da Rosa,
  • Alice Santos Rosa,
  • Otávio Augusto Chaves,
  • Vivian Neuza Santos Ferreira,
  • Thamara Kelcya Fonseca Oliveira,
  • Daniel Dias Coutinho Souza,
  • Nathalia Roberto Resende Borba,
  • Luciano Dornelles and
  • Milene Dias Miranda
  • + 3 authors

19 September 2023

The understanding that zidovudine (ZDV or azidothymidine, AZT) inhibits the RNA-dependent RNA polymerase (RdRp) of SARS-CoV-2 and that chalcogen atoms can increase the bioactivity and reduce the toxicity of AZT has directed our search for the discove...