Synthesis, design and biological evaluation of novel highly potent tacrine congeners for the treatment of Alzheimer's disease
作者:Slavka Hamulakova、Ladislav Janovec、Martina Hrabinova、Pavol Kristian、Kamil Kuca、Maria Banasova、Jan Imrich
DOI:10.1016/j.ejmech.2012.06.051
日期:2012.9
New tacrine derivatives 5a–d, 6a–d with piperazino-ethyl spacer linked with corresponding secondary amines and tacrine homodimer 8 were synthesized and tested as cholinesterase inhibitors on human acetylcholinesterase (hAChE) and human plasmatic butyrylcholinesterase (hBChE). In most cases the majority of synthesized derivatives exhibit a high AChE and BChE inhibitory activity with IC50 values in the
合成了新的他克林衍生物5a - d,6a - d和哌嗪子乙基间隔物并连接了相应的仲胺和他克林同二聚体8,并作为人乙酰胆碱酯酶(h AChE)和人血浆丁酰胆碱酯酶(h BChE)的胆碱酯酶抑制剂进行了测试。在大多数情况下,大多数合成衍生物表现出较高的AChE和BChE抑制活性,IC 50值在低纳摩尔范围内,明显比参考标准他克林(9-氨基-1,2,3,4-四氢ac啶,1)和7-MEOTA(7-甲氧基-9-氨基-1,2,3,4-四氢ac啶)。其中,抑制剂图8和5c显示出对h AChE的强抑制活性,IC 50值为4.49 nM和4.97,nM分别,并且对h AChE具有高选择性。化合物5d以hIC 50值为33.7 nM充当h BChE的最有效抑制剂,并且还表现出对h BChE的良好选择性。将所选抑制剂的解离常数K i与它们的IC 50值进行比较。进行分子建模研究以预测单个衍生物与h AChE /