Nonquaternary cholinesterase reactivators. 3. 3(5)-Substituted 1,2,4-oxadiazol-5(3)-aldoximes and 1,2,4-oxadiazole-5(3)-thiocarbohydroximates as reactivators of organophosphonate-inhibited eel and human acetylcholinesterase in vitro
作者:Clifford D. Bedford、Robert A. Howd、Oliver D. Dailey、Alexi Miller、Harold W. Nolen、Richard A. Kenley、John R. Kern、John S. Winterle
DOI:10.1021/jm00161a008
日期:1986.11
S-esters. The compounds were evaluated in vitro as reactivators of phosphonylated electric eel and human erythrocyte (RBC) acetylcholinesterases (AChE). The compounds were characterized with respect to (hydroxyimino)methyl acid dissociation constant, nucleophilicity, octanol/buffer partition coefficient, reversible AChE inhibition, and kinetics of reactivating ethyl methylphosphonylated AChE. One compound
作为早期研究的扩展(J. Med。Chem。1984,27,1431),我们制备了一系列3-取代的5-[((羟基亚氨基)甲基] -1,2,4-恶二唑和相应的5-硫代碳氢氧酸2-(N,N-二烷基氨基)乙基S-酯。在体外评估了该化合物作为磷酸化鳗鱼和人红细胞(RBC)乙酰胆碱酯酶(AChE)的活化剂。就(羟基亚氨基)甲基的解离常数,亲核性,辛醇/缓冲液分配系数,可逆的AChE抑制作用以及重新活化乙基甲基膦酰基化的AChE的动力学来表征化合物。还测试了一种化合物在预防AChE磷酸化中的有效性。所有测试的化合物均能显着活化乙基甲基膦酰化的AChE:3-n-辛基-和3-(1-萘基)-取代的醛肟对被抑制的酶具有反应性(在5-10倍之内),与基准吡啶鎓活化剂2-PAM和HI-6相同。所有取代的硫代碳氢氧酸S酯都是AChE的强大可逆抑制剂:3-n-辛基-和3-(1-萘基)-取代的硫代碳氢氧酸酯在低于5 m