Antioxidant properties of 2,5-substituted 6H-1,3,4-thiadiazines promising for experimental therapy of diabetes mellitus
作者:E. L. Gerasimova、E. G. Gazizullina、D. I. Igdisanova、L. P. Sidorova、T. A. Tseitler、V. V. Emelianov、O. N. Chupakhin、A. V. Ivanova
DOI:10.1007/s11172-022-3702-0
日期:2022.12
Antioxidant properties of synthetic 2,5-substituted 6H-1,3,4-thiadiazines were comprehensively studied using potentiometric methods based on the reactions of electron transfer (ET mechanism) and hydrogen atom transfer (HAT mechanism) from the anti-oxidant to oxidant molecule. The kinetic parameters of the reactions with various oxidizing agents were estimated taking into account peculiarities of the transformation of 2,5-substituted 6H-1,3,4-thiadiazines in solution. The relationships “structure—antioxidant properties” are established. The role of the electron-donating and electron-withdrawing properties of substituents in positions 2 and 5 of the 1,3,4-thiadiazine ring in the manifestation of antioxidant properties is examined.
使用基于抗氧化剂分子与氧化剂分子之间的电子转移(ET机制)和氢原子转移(HAT机制)反应的电位法,对合成2,5-取代6H-1,3,4-噻二嗪的抗氧化性能进行了全面研究。考虑到2,5-取代6H-1,3,4-噻二嗪在溶液中的转化特性,对与各种氧化剂反应的动力学参数进行了估算。建立了“结构——抗氧化性能”的关系。研究了1,3,4-噻二嗪环2号和5号位置的取代基的供电子和吸电子性质在抗氧化性能表现中的作用。