Exploiting the κ<sup>2</sup>‐Fashioned Coordination of [Se<sub>2</sub>]‐Donor Ligand L<sub>3</sub>Se for Facile Hg−C Bond Cleavage of Mercury Alkyls and Cytoprotection against Methylmercury‐Induced Toxicity
作者:Ramesh Karri、Ashish Chalana、Binayak Kumar、Sri Krishna Jayadev、Gouriprasanna Roy
DOI:10.1002/chem.201902578
日期:2019.10
coordinate through κ2 -fashion, in which both the Se atoms simultaneously attack the Hg center of mercury alkyls for facile Hg-C bond cleavage. It has the highest softness (σ) parameter and the lowest HOMO(Ln Se)-LUMO(MeHgX) energy gap and, thus, L3 Se is the most reactive among Ln Se towards MeHgX (X=Cl or I). L3 Se is highly efficient, more than L1 Se, in restoring the activity of antioxidant enzyme glutathione
Inhibition of peroxynitrite- and peroxidase-mediated protein tyrosine nitration by imidazole-based thiourea and selenourea derivatives
作者:Krishna P. Bhabak、Kandhan Satheeshkumar、Subramaniam Jayavelu、Govindasamy Mugesh
DOI:10.1039/c1ob05773a
日期:——
the selenourea moiety. Single crystal X-ray diffraction studies on some of the thiourea and selenourea derivatives reveal that the CS bonds in thioureas possess more of double bond character than the CSe bonds in the corresponding selenoureas. Therefore, the selenium compounds can react with PN or hydrogen peroxide much faster than their sulfur analogues. The reactions of thiourea and selenourea derivatives