New Prolyl Endopeptidase Inhibitors: <i>In Vitro</i> and <i>in Vivo</i> Activities of Azabicyclo[2.2.2]octane, Azabicyclo[2.2.1]heptane, and Perhydroindole Derivatives
作者:Bernard Portevin、Alain Benoist、Georges Rémond、Yolande Hervé、Michel Vincent、Jean Lepagnol、Guillaume De Nanteuil
DOI:10.1021/jm950858c
日期:1996.1.1
nM (compounds 24 and 25). Modulation of the side chain by replacement of the terminal phenyl ring by the dicyclopropyl moiety afforded derivatives 30 and 32 with improved potencies (IC50 between 10 and 20 nM). Furthermore, replacing the linear 4-phenylbutanoyl side chain by the (2-phenylcyclopropyl)carbonyl entity provided potent inhibitors with IC50 culminating at 0.9 nM on a rat cortex enzymatic preparation
通过取代1- [1-(4-(苯基苯基丁酰基)-L-脯氨酰基]吡咯烷酮的经典中心脯氨酸(SUAM 1221,3),已获得了一系列有效且选择性的α-酮杂环类型的脯氨酸肽肽酶(PEP)抑制剂。由非天然氨基酸PHI,ABO和ABH组成。这些含4-苯基丁酰基侧链的抑制剂表现出强大的体外抑制能力,IC50约为30 nM(化合物24和25)。通过用二环丙基部分取代末端苯环来调节侧链,得到具有增强的效力(IC 50在10和20nM之间)的衍生物30和32。此外,用(2-苯基环丙基)羰基实体取代直链的4-苯基丁酰基侧链,提供了有效的抑制剂,在大鼠皮层酶制剂上(化合物70)的IC50最终达到0.9 nM。环丙基环的构型必须为R,R,以便不仅在体外获得强PEP抑制,而且在体内具有良好的活性,例如抑制剂68,其ID50 ip和po分别为0.3和1 mg / kg , 分别。最后,在使用东amine碱引起的失忆症的