In this paper, we report the synthesis and biological evaluation of picolylamide-based diselenides with the aim of developing a new series of diselenides with O···Se non-bonded interactions. The synthesis of diselenides was performed by a simple and efficient synthetic route. All the products were obtained in good yields and their structures were determined by 1H-NMR, 13C-NMR and HRMS. All these new compounds showed promising activities when tested in different antioxidant assays. These amides exhibited strong thiol peroxidase-like (TPx) activity. In fact one of the compounds showed 4.66 times higher potential than the classical standard i.e., diphenyl diselenide. The same compound significantly inhibited iron (Fe)-induced thiobarbituric acid reactive species (TBARS) production in rat’s brain homogenate. In addition, the X-ray structure of the most active compound showed non-bonded interaction between the selenium and the oxygen atom that are in close proximity and may be responsible for the increased antioxidant activity. The present study provides evidence about the possible biochemical influence of nonbonding interactions on organochalcogens potency.
本文报告了
吡啶酰胺基二
硒化物的合成和
生物学评价,旨在开发具有 O-Se 非键相互作用的新系列二
硒化物。二
硒化物的合成采用了简单高效的合成路线。所有产物均以良好的收率获得,并通过 1H-NMR、13C-NMR 和 HRMS 确定了它们的结构。在不同的抗氧化试验中,所有这些新化合物都表现出了良好的活性。这些酰胺具有很强的
硫醇
过氧化物酶(T
Px)活性。事实上,其中一种化合物的电位比经典标准(即二苯基二
硒化物)高出 4.66 倍。该化合物还能明显抑制大鼠脑匀浆中
铁(Fe)诱导的
硫代
巴比妥酸活性物质(TBARS)的生成。此外,最有效化合物的 X 射线结构显示,
硒和氧原子之间存在非键相互作用,它们非常接近,这可能是抗氧化活性增强的原因。本研究提供的证据表明,非键相互作用可能对
有机钙剂的效力产生生化影响。