N,N′-bis-(3,4,5-trimethoxybenzyl) ethylenediamine N,N′-diacetic acid as a new iron chelator with potential medicinal applications against oxidative stress
作者:Jean-Baptiste Galey、Jacqueline Dumats、Sylvie Genard、Odile Destree、Patrick Pichaud、Philippe Cctroux、Laurent Marrot、Iréna Beck、Bona Fernandez、Gilles Barre、Michel Seite、Georges Hussler、Michel Hocquaux
DOI:10.1016/0006-2952(95)02109-4
日期:1996.1
N,N'-bis-(3,4,5-trimethoxybenzyl) ethylenediamine N,N,-diacetic acid dihydrochloride (OR10141) is a member of a recently described series of "oxidative stress activatable iron chelators." These chelators have a relatively low affinity for iron but can be site-specifically oxidized, in situations mimicking oxidative stress in vitro, into species with strong iron-binding capacity. It is hoped that this
N,N′-双-(3,4,5-三甲氧基苄基)乙二胺N,N,-二乙酸二盐酸盐(OR10141)是最近描述的一系列“氧化应激可活化铁螯合剂”的成员。这些螯合剂对铁的亲和力较低,但在模拟体外氧化应激的情况下,可以被位点特异性氧化为具有强铁结合能力的物种。希望与可能干扰铁代谢的强铁螯合剂相比,这种局部活化过程将毒性降至最低。本文描述了旨在表征铁-OR10141配合物与过氧化氢之间的氧化反应的实验结果。在中性水溶液中将抗坏血酸盐和过氧化氢与OR10141的三价铁螯合物一起孵育,得到一种发色团为560 nm的紫色溶液,这与三甲氧基苄基环之一的邻羟基化一致。通过在不存在还原剂的情况下将过氧化氢与三价铁OR10141配合物孵育,也可以进行OR10141的氧化反应,尽管反应速度较慢。HPLC分析表明,OR10141在反应过程中被消耗并且主要转化为N-(2-羟基3,4,5-三甲氧基苄基)N'-(3,4,5-三甲