以5-氨基苯并咪唑酮为原料,经过酰化和取代反应合成了目标化合物,并采用Ellman分光光度法,考察了它们对乙酰胆碱酯酶的体外抑制活性。结果表明部分目标化合物具有一定的乙酰胆碱酯酶抑制活性,其中化合物4d的抑制活性最好,其IC50=7.2μmol·L^-1,优于对照药利斯的明;同时它对丁酰胆碱酯酶几乎没有抑制活性。5-氨基苯并咪唑酮类化合物对乙酰胆碱酯酶的抑制活性值得进一步研究。
The target compounds were prepared from 5-aminobenzimidazolone by two steps reaction, and their AChE inhibitory activities were measured by Ellman method in vitro. The AChE inhibitory activity of compound 4d is the best of them, and its IC50 value is equal to 7.2 μmol·L^-1, which is better than that of rivastigmine; moreover the 4d had no inhibitory activities to BuChE. Therefore, the inhibitory activities of 5-aminobenzimidazolone derivatives to acetylcholinesterase are worth further researching.