Design, Synthesis, and Structure−Activity Relationships of a Series of 3-[2-(1-Benzylpiperidin-4-yl)ethylamino]pyridazine Derivatives as Acetylcholinesterase Inhibitors
作者:Jean-Marie Contreras、Isabelle Parrot、Wolfgang Sippl、Yveline M. Rival、Camille G. Wermuth
DOI:10.1021/jm001088u
日期:2001.8.1
Starting from the 3-[2-(1-benzylpiperidin-4-yl)ethylamino]-6-phenylpyridazine 1, we performed the design, the synthesis, and the structure-activity relationships of a series of pyridazine analogues acting as AChE inhibitors. Structural modifications were achieved on four different parts of compound 1 and led to the following observations: (i) introduction of a lipophilic environment in the C-5 position
从3- [2-(1-苄基哌啶-4-基)乙基氨基] -6-苯基哒嗪1开始,我们进行了一系列作为AChE抑制剂的哒嗪类似物的设计,合成和结构-活性关系。在化合物1的四个不同部分进行了结构修饰,得出以下结论:(i)在哒嗪环的C-5位引入亲脂性环境有利于AChE抑制活性和AChE / BuChE选择性; (ii)C-6苯基的取代和各种取代是可能的,并导致等同或稍微活性更高的衍生物;(iii)苄基哌啶部分的等排取代或修饰对活性是有害的。在所有准备好的衍生物中,茚并哒嗪衍生物4g被发现是更有效的抑制剂,在电鳗AChE上的IC(50)为10 nM。与化合物1相比,其效力提高了12倍。此外,IC [50]为21 nM的3- [2-(1-苄基哌啶-4-基)乙基氨基] -5-甲基-6-苯基哒嗪4c对人AChE的选择性高100倍(人BuChE / AChE之比为24)比参比他克林。