UDP-GlcNAc Analogues as Inhibitors of<i>O</i>-GlcNAc Transferase (OGT): Spectroscopic, Computational, and Biological Studies
作者:Mattia Ghirardello、Daniela Perrone、Nicola Chinaglia、David Sádaba、Ignacio Delso、Tomas Tejero、Elena Marchesi、Marco Fogagnolo、Karim Rafie、Daan M. F. van Aalten、Pedro Merino
DOI:10.1002/chem.201801083
日期:2018.5.17
series of glycomimetics of UDP‐GlcNAc, in which the β‐phosphate has been replaced by either an alkyl chain or a triazolyl ring and the sugar moiety has been replaced by a pyrrolidine ring, has been synthesized by the application of different click‐chemistry procedures. Their affinities for human O‐GlcNAc transferase (hOGT) have been evaluated and studied both spectroscopically and computationally. The binding
通过应用不同的点击化学合成了一系列 UDP-GlcNAc 的糖模拟物,其中 β-磷酸酯已被烷基链或三唑基环取代,糖部分已被吡咯烷环取代程序。它们对人 O-GlcNAc 转移酶 (hOGT) 的亲和力已通过光谱和计算进行了评估和研究。最佳配体的结合表位已通过饱和转移差异 (STD) NMR 光谱法在溶液中确定。实验、光谱和计算结果一致,指出了 β-磷酸结合的重要作用。我们发现,β-磷酸酯相互作用的丧失可以通过作为碳水化合物单元替代物的吡咯啉环上疏水基团的存在来抵消。两种制备的糖模拟物显示出微摩尔水平的抑制作用。