Synthesis and pharmacological assessment of diversely substituted pyrazolo[3,4-b]quinoline, and benzo[b]pyrazolo[4,3-g][1,8]naphthyridine derivatives
作者:Daniel Silva、Mourad Chioua、Abdelouahid Samadi、M. Carmo Carreiras、María-Luisa Jimeno、Eduarda Mendes、Cristóbal de los Ríos、Alejandro Romero、Mercedes Villarroya、Manuela G. López、José Marco-Contelles
DOI:10.1016/j.ejmech.2011.05.068
日期:2011.9
The synthesis and pharmacological analyses of a number of pyrazolo[3,4-b]quinoline and benzo[b]pyrazolo[4,3-g][1,8]naphthyridine derivatives are reported. We have synthesized the diversely substituted tacrine analogues 1–6, by Friedländer-type reaction of readily available o-amino-1-methyl-pyrazole-dicarbonitriles with cyclohexanone. The biological evaluation showed that pyrazolotacrines 1–6 are inhibitors
报道了许多吡唑并[3,4- b ]喹啉和苯并[ b ]吡唑并[4,3- g ] [1,8]萘啶衍生物的合成和药理学分析。我们已合成了不同地取代的他克林的类似物1 - 6,由易得的德兰德型反应ø -氨基-1-甲基-吡唑烷二腈与环己酮。生物学评估表明,吡唑并ac碱1 – 6是电的乙酰胆碱酯酶(E的抑制剂)。eAChE),在微摩尔范围内,对血清马丁酰胆碱酯酶(eqBuChE)的抑制作用具有很高的选择性;最有趣的抑制剂是N-(5-氨基-1-甲基-6,7,8,9-四氢-1 H-苯并[ b ]吡唑并[4,3- g ] [1,8]萘啶-3-酰基)乙酰胺(5)[IC 50(E eAChE)= 0.069±0.006μM; IC 50(eqBuChE)= 6.3±0.6μM]。动力学研究表明,化合物5是E eAChE的混合型抑制剂(K i = 155 nM)。抑制剂5对鱼藤酮/寡霉素A诱导的神经元死亡显示出45%的神经保护值。