作者:Nafisah Al-Rifai、Hannelore Rücker、Sabine Amslinger
DOI:10.1002/chem.201302117
日期:2013.11.4
unit. The assessment of their reactivity as electrophiles in thia‐Michael additions with cysteamine shows a change in the reactivity of more than six orders of magnitude. Moreover, a clear correlation between their reactivity and an influence on the inflammation proteins heme oxygenase‐1 (HO‐1) and the inducible NO synthase (iNOS) is demonstrated. As the biologically most active compound, the α‐CF3‐chalcone
硫醇介导的过程在诱导或抑制炎症蛋白中起关键作用。调整亲电试剂的反应性可以提高仅处理某些表面半胱氨酸的选择性。14个带有不同α-X取代基的2',3,4,4'-四甲氧基查con(X = H,F,Cl,Br,I,CN,Me,p- NO 2- C 6 H 4,Ph,p- OMe ‐C 6 H 4,NO 2,CF 3,COOEt,COOH)合成,其中包含潜在的亲电性α,β-不饱和羰基单元。硫代-迈克尔加半胱胺中它们作为亲电子试剂的反应性评估显示,反应性变化超过六个数量级。此外,还证明了它们的反应性与对炎症蛋白血红素加氧酶-1(HO-1)和诱导型一氧化氮合酶(iNOS)的影响之间存在明显的相关性。作为生物最活跃化合物,α-CF 3 -chalcone被显示抑制NO生成RAW264.7小鼠巨噬细胞在纳摩尔范围内。