Studies on the mechanism of toxicity of acetaminophen. Synthesis and reactions of N-acetyl-2,6-dimethyl- and N-acetyl-3,5-dimethyl-p-benzoquinone imines
作者:C. Roger Fernando、Ian C. Calder、Kathryn N. Ham
DOI:10.1021/jm00185a001
日期:1980.11
N-Acetyl-2,6-dimethyl-p-benzoquinone imine and N-acetyl-3,5-dimethyl-p-benzoquinone imine were prepared from 2,6-dimethylacetaminophen and 3,5-dimethylacetaminophen by oxidation with lead tetraacetate. Reaction of N-acetyl-2,6-dimethyl-p-benzoquinone imine with hydrochloric acid gave 3'-chloro-2',6'-dimethyl-4'-hydroxyacetanilide, whereas ethanethiol, aniline, and ethanol gave tetrahedral adducts resulting
通过用四乙酸铅氧化由2,6-二甲基对乙酰氨基酚和3,5-二甲基对乙酰氨基酚制备N-乙酰基-2,6-二甲基-对苯醌亚胺和N-乙酰基-3,5-二甲基-对苯醌亚胺。N-乙酰基-2,6-二甲基-对苯醌亚胺与盐酸反应生成3'-氯-2',6'-二甲基-4'-羟基乙酰苯胺,而乙硫醇,苯胺和乙醇生成四面体加合物除了亚胺碳。水得到2,6-二甲基-对苯醌。用N-乙酰基-3,5-二甲基-对苯醌亚胺,水和苯胺取代亚胺碳,生成2,6-二甲基-对苯醌和3,5-二甲基-N-苯基-对苯醌亚胺。乙硫醇得到3'.5'-二甲基-2'-(乙硫基)-4'-羟基乙酰苯胺。2,6-二甲基对乙酰氨基酚和3的毒性,在小鼠和大鼠中组织学检查了5-二甲基对乙酰氨基酚。3,5-二甲基对乙酰氨基酚的肾毒性稍强,但显示出与对乙酰氨基酚相似的肝毒性。2,6-二甲基对乙酰氨基酚与N-甲基对乙酰氨基酚一样,几乎没有组织损伤。