Synthesis of 6-thio pseudo glycolipids and their orientation on a gold slide studied by IRRAS
作者:Mickael Guillemineau、Serena Singh、Michael Grossutti、France-Isabelle Auzanneau
DOI:10.1016/j.carres.2010.09.035
日期:2010.12
We have synthesized four 6-thio pseudo glycolipid analogues and assessed how two of them self-assembled on a gold surface. These structures were designed as candidate tethers molecules to anchor bilayer lipid membranes on gold. 6-Deoxy-6-thiogalactose was chosen to anchor the macromolecule to the gold and define an aqueous zone at the gold surface. A long alkane chain (C-12 or C-18) linked to the anomeric
我们合成了四个6-硫代伪糖脂类似物,并评估了其中两个如何在金表面上自组装。这些结构被设计为候选束缚分子,以将双层脂质膜锚定在金上。选择6-脱氧-6-硫代半乳糖以将大分子锚定在金上并在金表面限定水区。选择与糖残基的异头位置连接的长链烷烃链(C-12或C-18)以固定双层脂质膜。碳水化合物和疏水链之间的连接是糖苷键或由炔丙基十二烷和叠氮-十八烷的铜(I)催化的炔丙基糖苷的炔-叠氮化物环加成(CuAAC)形成的1,4-二取代的三唑。我们期望烃链将自身垂直于金表面定向并结合到双层膜的第一张小叶中。我们已经使用红外反射吸收光谱法(IRRAS)研究了C-12糖苷配基类似物在金上的自组装单分子层。我们将IRRAS实验给出的结果与通过衰减全反射(ATR)光谱记录在随机取向类似物薄膜上的IR光谱进行了比较。我们的结果表明,C-12类似物确实与金结合,并使其自身垂直于金载玻片。我们将IRRAS实验给出的结果与