<i>S</i>-Methylation of <i>O,O-</i>Dialkyl Phosphorodithioic Acids: <i>O,O,S</i>-Trimethyl Phosphorodithioate and Phosphorothiolate as Metabolites of Dimethoate in Mice
作者:Mahmoud Mahajna、Gary B. Quistad、John E. Casida
DOI:10.1021/tx9600715
日期:1996.1.1
MeO(HS)P(O)SMe, MeO(HO)P(O)SMe, (MeO)2P(S)SMe, and (MeO)2P-(O)SMe; the latter two compounds are also established by GC-MS as dimethoate metabolites in mouse urine, liver, kidney, and lung. Several approaches verified unequivocally that the previously unknown P-SMe metabolites in urine and tissues are due to in vivo S-methylation rather than to impurities. Studies with other O,O-dimethyl and O,O-diethyl
O,O,S-三甲基二硫代磷酸酯和硫代磷酸酯[(MeO)2P(S)SMe和(MeO)2P-(O)SMe分别是一些主要O中的杂质,延迟毒物和脱毒抑制剂,O-二甲基二硫代磷酸酯杀虫剂。我们最近的研究表明,小鼠中一硫代氨基甲酸和二硫代氨基甲酸具有广泛的S-甲基化,这表明诸如(MeO)2P(S)SH的二硫代磷酸也可能会进行S-甲基化。在腹腔镜治疗的小鼠中检查了这种可能性,重点研究了乐果[[MeO)2P(S)SCH2C(O)NHMe]的代谢产物,这是最重要的有机磷杀虫剂之一。乐果的尿代谢产物不含P-SMe取代基,经发现包含31种NMR光谱法鉴定为MeO(HS)P(O)SMe,MeO(HO)P(O)SMe的四种具有P-SMe部分的化合物,(MeO)2P(S)SMe和(MeO)2P-(O)SMe; 后两种化合物也通过GC-MS建立为乐果在小鼠尿液,肝,肾和肺中的代谢物。几种方法明确地证实,尿液和组织中以前