Synthesis of hexa- to tridecasaccharides related to Shigella dysenteriae type 1 for incorporation in experimental vaccines
作者:Vince Pozsgay、Göran Ekborg、Srinivasa-Gopalan Sampathkumar
DOI:10.1016/j.carres.2006.04.006
日期:2006.7
Hexa- to tridecasaccharides corresponding to the O-specific polysaccharide (O-SP) of the Gram-negative bacterium Shigella dysenteriae type 1 were synthesized in solution phase. The syntheses utilized tetra-, octa-, and dodecasaccharide intermediates that represent one to three contiguous tetrasaccharide repeating units of the O-SP [Synlett2003, 743]. These compounds were glycosylated with mono-, di-
在溶液相中合成了对应于革兰氏阴性痢疾志贺氏菌1型的O特异性多糖(O-SP)的六到十三碳糖。合成利用四糖,八糖和十二糖中间体,它们代表O-SP的一到三个连续的四糖重复单元[Synlett2003,743]。这些化合物被单糖,二糖和三糖三氯乙酰胺糖基化,这是在这项研究中合成的。证明了4,6-O-二苯甲酮缩酮在2-叠氮基-2-脱氧-吡喃葡萄糖基供体的糖基化反应中具有出色的立体定向作用。游离寡糖的特征在于1H和13C NMR光谱以及高分辨率质谱。本文所述的寡糖包含5-(甲氧基羰基)戊基糖苷配基,以使用最近公开的方案最终附着于免疫原性载体[J.J.Biol.Chem。,2002,5,5]。单位 化学,2005,70,6987]。