Synthesis of glycoconjugate fragments of mycobacterial phosphatidylinositol mannosides and lipomannan
作者:Benjamin Cao、Jonathan M White、Spencer J Williams
DOI:10.3762/bjoc.7.47
日期:——
with host cells. We report the efficient synthesis of a series of azidooctyl di- and trimannosides possessing the following glycan structures: alpha-Man-1,6-alpha-Man, alpha-Man-1,6-alpha-Man-1,6-alpha-Man, alpha-Man-1,2-alpha-Man-1,6-alpha-Man and 2,6-di-(alpha-Man)-alpha-Man. The synthesis includes the use of non-benzyl protecting groups compatible with the azido group and preparation of the branched
结核分枝杆菌是结核病 (TB) 的病原体,具有复杂的细胞壁,细胞壁含有富含甘露糖的糖磷脂,称为磷脂酰肌醇甘露糖苷 (PIM)、脂甘露聚糖 (LM) 和脂阿拉伯甘露聚糖 (LAM)。这些糖磷脂在细胞壁功能和宿主-病原体相互作用中起重要作用。合成 PIM/LM/LAM 子结构是描绘和剖析甘露糖糖磷脂生物合成及其与宿主细胞相互作用的精细细节的有用生化工具。我们报告了一系列具有以下聚糖结构的叠氮辛基二和三甘露糖苷的有效合成:alpha-Man-1,6-alpha-Man、alpha-Man-1,6-alpha-Man-1,6-alpha-人,alpha-Man-1,2-alpha-Man-1,6-alpha-Man 和 2,6-di-(alpha-Man)-alpha-Man。该合成包括使用与叠氮基相容的非苄基保护基团,以及通过 3,4-丁二缩醛的双糖基化制备支链三糖结构 2,6-二-(α-Man