Synthesis and biological activity of fluoroalkylamine derivatives of narcotic analgesics
作者:William G. Reifenrath、Edward B. Roche、Walid A. Al-Turk、Howard L. Johnson
DOI:10.1021/jm00183a005
日期:1980.9
normeperidine series, there was no apparent direct relationship between pKa and opiate receptor binding. However, a relationship involving the hydrophobic character of the N-substituent is discussed. The N-(2-fluoroethyl) derivatives in both series were found to cause convulsions in rats at doses of 40-45 mg/kg ip. Elevated serum citrate levels were found in these rats, implicating in vivo oxidative deamination
N-乙基-,N-(2-氟乙基)-,N-(2,2-二氟乙基)-和N-(2,2,2-三氟乙基)-取代的甲哌啶(1b-e)和去甲甲唑嗪(2b- e)制备衍生物。在小鼠中确定化合物的镇痛活性。在存在和不存在钠离子的情况下,进行阿片受体结合研究。在猴子中研究了甲乙咪唑嗪衍生物的拮抗活性。在分离的豚鼠回肠中进一步检查了它们的相对激动剂活性。测量pKa值。弱碱性衍生物会失去体内激动剂的活性。对于降甲唑嗪衍生物,阿片受体结合数据与豚鼠回肠激动剂效力和小鼠输精管拮抗剂效力一致,但与体内数据不一致。对于碱性较低的降甲唑嗪衍生物,阿片受体的结合减少。在normeperidine系列中,pKa和阿片受体结合之间没有明显的直接关系。但是,讨论了涉及N-取代基的疏水特性的关系。发现两个系列中的N-(2-氟乙基)衍生物在大鼠中以40-45 mg / kg ip的剂量引起惊厥。在这些大鼠中发现血清柠檬酸盐水平升高,这暗示