Synthesis of N-hydroxyacetaminophen, a postulated toxic metabolite of acetaminophen, and its phenolic sulfate conjugate
作者:Mark W. Gemborys、Gordon W. Gribble、Gilbert H. Mudge
DOI:10.1021/jm00205a011
日期:1978.7
The synthesis of N-hydroxyacetaminophen (N-acetyl-N-hydroxy-p-aminophenol, 4), a postulated toxic metabolite of acetaminophen (N-acetyl-p-aminophenol, 3), and its phenolic sulfate conjugate (potassium N-acetyl-N-hydroxy-p-aminophenyl sulfate) (13) is described. Potassium p-nitrophenyl sulfate was reduced to the hydroxylamine, acetylated, and treated with sulfatase to yield N-hydroxyacetaminophen. The
N-羟基对乙酰氨基酚(N-乙酰基-N-羟基-对氨基苯酚,4),对乙酰氨基酚(N-乙酰-对氨基苯酚,3)的假定有毒代谢产物及其酚硫酸盐共轭物(N-乙酰基钾)的合成描述了-(N-羟基-对-氨基苯基硫酸盐)(13)。将对硝基苯基硫酸钾还原为羟胺,乙酰化,并用硫酸酯酶处理,得到N-羟基对乙酰氨基酚。光谱数据(IR,UV,MS,1H NMR和13C NMR)支持指定的结构。发现N-羟基对乙酰氨基酚在生理pH和温度下是中等不稳定的,而其酚硫酸盐结合物是稳定的。