Syntheses of N-(2-hexahydropyrimidinoethyl)propionanilides.
作者:JUTARO OKADA、MASAHARU SHIMABAYASHI
DOI:10.1248/cpb.28.3310
日期:——
N-(2-Hexahydropyrimidinoethyl) anilines (6a-f) were prepared by the condensation of N-(β-bromoethyl) aniline hydrobromide and hexahydropyrimidines. They were further converted to N-(2-hexahydropyrimidinoethyl) propionanilides by N-propionylation. The analgesic activities of the twelve compounds thus obtained were examined by subcutaneous administration to mice. Among the propionanilides, the N-isopropyl- and N-benzylhexahydropyrimidine derivatives (7c, e) possessed ca. 1/3 and 1/6 of the analgesic effect of pentazocine, respectively, and 7e showed a lower toxicity. On the other hand, the N-phenethyl derivative (7f) was inactive.
N-(2-六氢嘧啶乙基)苯胺(6a-f)是由 N-(β-溴乙基)苯胺氢溴酸盐和六氢嘧啶缩合而成。它们通过 N-丙酰化进一步转化为 N-(2-六氢嘧啶乙基)丙酰苯胺。通过给小鼠皮下注射,对由此获得的 12 种化合物的镇痛活性进行了检测。在丙酰苯胺类化合物中,N-异丙基和 N-苄基六氢嘧啶衍生物(7c 和 7e)的镇痛效果分别约为喷他佐辛的 1/3 和 1/6,而且 7e 的毒性较低。另一方面,N-苯乙基衍生物(7f)没有活性。