to play an important role in the increased activity, since the N-benzoylpiperidine derivative was almost inactive. We found that 1-benzyl-4-[2-(N-[4'-(benzylsulfonyl) benzoyl]-N-methylamino]ethyl]piperidine hydrochloride (21) (IC50 = 0.56 nM) is one of the most potent inhibitors of acetylcholinesterase. Compound 21 showed an affinity 18,000 times greater for AChE than for BuChE. At a dose of 3 mg/kg
合成了一系列的1-苄基-4- [2-(N-苯甲酰基
氨基)乙基]
哌啶衍
生物,并评估了其抗
乙酰胆碱酯酶(anti-AChE)的活性。用对位上的大体积部分取代苯甲酰胺导致活性显着增加。在苯甲酰胺的氮原子上引入烷基或苯基大大增强了活性。
哌啶氮原子的基本质量似乎在活性增加中起重要作用,因为N-苯甲酰基
哌啶衍
生物几乎没有活性。我们发现1-苄基-4- [2-(N- [4'-(苄基磺酰基)苯甲酰基] -N-甲基
氨基]乙基]
哌啶盐酸盐(21)(IC50 = 0.56 nM)是最有效的
抑制剂之一化合物21对AChE的亲和力比对BuChE的亲和力大18,000倍,剂量为3 mg / kg时,21在大鼠的脑涡和海马中产生了
乙酰胆碱(ACh)含量的显着显着增加。选择化合物21作为抗痴呆剂进行高级开发。