Discovery of α-Substituted Imidazole-4-acetic Acid Analogues as a Novel Class of ρ<sub>1</sub>γ-Aminobutyric Acid Type A Receptor Antagonists with Effect on Retinal Vascular Tone
作者:Jacob Krall、Benjamin M. Brygger、Sara B. Sigurðardóttir、Clarissa K. L. Ng、Christoffer Bundgaard、Jan Kehler、Birgitte Nielsen、Toke Bek、Anders A. Jensen、Bente Frølund
DOI:10.1002/cmdc.201600356
日期:2016.10.19
of α‐ and N‐alkylated, as well as bicyclic analogues of IAA to explore the structure–activity relationship of this scaffold focusing on the acetic acid side chain of IAA. The compounds were prepared via IAA from l‐histidine by an efficient minimal‐step synthesis, and their pharmacological properties were characterized at native rat GABAARs in a [3H]muscimol binding assay and at recombinant human α1β2γ2S
含ρ的γ-氨基丁酸A型受体(GABA A Rs)在控制视觉信号中起重要作用。因此,选择性靶向这些GABA A R的配体是令人关注的。在这项研究中,我们证明了部分GABA A R激动剂咪唑-4-乙酸(IAA)能够在体内穿透血脑屏障。我们制备了一系列的α-和N-烷基化以及IAA的双环类似物,以研究该支架的结构-活性关系,重点是IAA的乙酸侧链。通过IAA制备从化合物升通过有效最小步合成组氨酸,以及它们的药理学性质进行了表征在天然大鼠GABA甲Rs in a [3H]muscimol binding assay and at recombinant human α1β2γ2S and ρ1 GABAARs using the FLIPR™ membrane potential assay. The (+)‐α‐methyl‐ and α‐cyclopropyl‐substituted IAA analogues