N-(4-Substituted-thiazolyl)oxamic acid derivatives, new series of potent, orally active antiallergy agents
作者:Karl D. Hargrave、Friedrich K. Hess、James T. Oliver
DOI:10.1021/jm00362a014
日期:1983.8
showed a 50% inhibition at less than 2 mg/kg po or less than 0.4 mg/kg iv and were significantly more potent than disodium cromoglycate, which in the rat PCA model is orally inactive and gives a 50% inhibition at 1.2 mg/kg iv. Hydrolysis of the oxamates generally resulted in enhanced activities, while substitution of the phenyl ring with a variety of substituents (e.g., 4-F, 4-OEt, and 4-NHCOCH3) did
合成了一系列的N-(4-取代的噻唑基)草酰胺酸衍生物,并在大鼠PCA模型中测试了其抗过敏活性。这些化合物可通过用硫脲和碘处理适当的苯乙酮或使氯乙酰苯与硫脲反应生成相应的氨基噻唑来方便地制备。随后与乙二酰氯缩合,得到噻唑基草酸酯。许多类似物在低于2 mg / kg po或低于0.4 mg / kg iv时显示出50%的抑制作用,并且比色甘酸二钠显着更有效,后者在大鼠PCA模型中是口服失活的,并在50%时抑制。 1.2 mg / kg iv。草酸盐的水解通常会增强活性,而苯环则被各种取代基(例如4-F,4-OEt,和4-NHCOCH 3)没有显着增强未取代苯基衍生物的活性。已选择一种乙醇胺盐,N- [4-(1,4-苯并二恶烷-6-基)-2-噻唑基]乙酰胺酸乙醇胺盐(61,PRH-836-EA)进行进一步的药理评估。