Nine novel mono-oxime reactivators bearing xylene linker were synthesized in an effort to
 improve previously prepared xylene bisoximes and monocarbamoyl-monooximes. The novel compounds
 were tested in vitro on the model of tabun-, paraoxon-, methylparaoxon- and DFP-inhibited
 human erythrocyte AChE. Their reactivation ability was compared to pralidoxime, asoxime, obidoxime and two previously
 prepared xylene linked bisoximes (K107, K108). All compounds showed minimal reactivation of tabun-inhibited
 AChE at selected concentration scale. This finding was explained by molecular modelling study. Bisoximes obidoxime
 and K108 resulted as the best reactivators for paraoxon-, methylparaoxon- and DFP-inhibited AChE. The loss of nonoxime
 moiety lead to the loss of reactivation ability within the novel compounds. Though the novel reactivators did not
 exceed previously known compounds, they confirmed former SAR findings for xylene-linked AChE reactivators.
                                    合成了九种新的单氮氧基反应剂,它们具有二
甲苯桥梁,旨在改进先前制备的二
甲苯双氮氧基化物和单
氨基甲酰基单氮氧基化物。这些新化合物在体外实验中用于抑制人红细胞
乙酰胆碱酯酶(AChE)的模型,包括
氟磷酸酯(tabun)、对
磷酸酯(paraoxon)、甲基对
磷酸酯(methylparaoxon)和DFP。它们的再激活能力与普拉里多辛(pralidoxime)、阿索辛(asoxime)、欧比多辛(obidoxime)以及两种先前制备的二
甲苯链接的双氮氧基化物(K107、K108)进行了比较。在所选浓度范围内,所有化合物对
氟磷酸酯抑制的AChE显示出最低的再激活能力。这一发现通过分子模拟研究进行了解释。双氮氧基化物欧比多辛和K108是对抑制的AChE的最佳反应剂。新化合物中非氮氧基部分的缺失导致再激活能力的丧失。尽管这些新反应剂未能超越先前已知的化合物,但它们确认了关于二
甲苯链接AChE反应剂的先前
SAR(结构-活性关系)发现。