A Mild Heteroatom (O-, N-, and S-) Methylation Protocol Using Trimethyl Phosphate (TMP)–Ca(OH)2Combination
作者:Yu Tang、Biao Yu
DOI:10.1055/a-1731-3852
日期:2022.5
A mild heteroatom methylation protocol using trimethylphosphate (TMP)–Ca(OH)2 combination has been developed, which proceeds in DMF, or water, or under neat conditions, at 80 °C or at room temperature. A series of O-, N-, and S-nucleophiles, including phenols, sulfonamides, N-heterocycles, such as 9H-carbazole, indole derivatives, and 1,8-naphthalimide, and aryl/alkyl thiols, are suitable substrates
Antithyroid Drugs and their Analogues Protect Against Peroxynitrite-Mediated Protein Tyrosine Nitration-A Mechanistic Study
作者:Krishna P. Bhabak、Govindasamy Mugesh
DOI:10.1002/chem.200902145
日期:2010.1.25
the presence of a thione or selone moiety is important for an efficient inhibition. Similarly, the replacement of NH moiety in MMI by N‐methyl or N‐m‐methoxybenzyl substituents dramatically reduces the antioxidant activity of the parent compound. Theoretical studies indicate that the substitution of NH moiety by NMe significantly increases the energy required for the oxidation of sulfur center by