The Effect of Fluorine Substitution on the Physicochemical Properties and the Analgesic Activity of Paracetamol
作者:Sallyann Barnard、R C Storr、P M O’Neill、B K Park
DOI:10.1111/j.2042-7158.1993.tb07099.x
日期:2011.4.12
paracetamol. ED50 values for analgesic activity in the phenylquinone-induced abdominal constriction test on male Swiss White mice showed that ring substitution by fluorine reduced activity, especially at the 2,6-positions. Introduction of fluorine into the amide group enhanced activity significantly. Correlation of the analgesic activity with the physicochemical properties indicated that conjugation
研究了6-羟基乙酰苯胺(对乙酰氨基酚)的六个氟化类似物的理化性质和止痛作用。与羟基相邻的氟取代增加了亲脂性和氧化电位,而与酰胺相邻的取代对亲脂性的影响很小,但导致氧化电位的增加更大。对于在2和6位具有氟的类似物,也缺乏酰胺基团和芳环的共平面性和共轭性。将氟引入对乙酰氨基酚的酰胺基团使亲脂性提高了4倍,并且还提高了对乙酰氨基酚的氧化电位。在苯醌诱导的雄性瑞士白老鼠的腹部收缩试验中,ED50的镇痛活性值表明,氟取代环可降低活性,特别是在2,6位 将氟引入酰胺基团显着增强了活性。镇痛作用与理化性质的关系表明,酰胺基团与芳环的共轭(和平面性)对于活性至关重要,并且容易氧化也可能是重要的因素。