Pyrrole alkanoic acid derivatives as nuisance inhibitors of microsomal prostaglandin E2 synthase-1
作者:Andrea Wiegard、Walburga Hanekamp、Klaus Griessbach、Jörg Fabian、Matthias Lehr
DOI:10.1016/j.ejmech.2011.12.009
日期:2012.2
Microsomal prostaglandin E2 synthase-1 (mPGES-1) is an enzyme, which is induced during the inflammatory response. Therefore, inhibitors of this enzyme are considered to be potential anti-inflammatory drugs. We have identified 3-(4-dodecanoyl-1,3,5-trimethylpyrrol-2-yl)propionic acid (12) as submicromolar inhibitor of mPGES-1. Surprisingly, structural variations made around this lead only resulted in
微粒体前列腺素E 2合酶1(mPGES-1)是一种在炎症反应期间被诱导的酶。因此,该酶的抑制剂被认为是潜在的抗炎药。我们确定了3-(4-十二烷酰基-1,3,5-三甲基吡咯-2-基)丙酸(12)作为mPGES-1的亚微摩尔抑制剂。出乎意料的是,围绕该前导物的结构变化仅导致酶抑制效能的相对较小的变化。据报道,这种平坦的结构-活性关系通常是所谓的令人讨厌的抑制剂,它们不是通过直接与酶结合而发挥作用,而是通过在微摩尔浓度(有时甚至是亚微摩尔浓度)形成胶体状聚集体,从而以某种方式隔离并抑制了酶的靶标。没有专一性。由于基于聚集体的抑制作用对非离子型清洁剂(例如Triton X-100)高度敏感,因此,我们也研究了一些在这种清洁剂存在下能抑制人重组mPGES-1的化合物。吡咯衍生物12,67和81当添加0.1%的去污剂时,在Triton X-100不存在的情况下,IC 50值在0.1和1μM范围内时,其