作者:Marika Karskela、Miriam von Usedom、Pasi Virta、Harri Lönnberg
DOI:10.1002/ejoc.201200926
日期:2012.10.8
Trivalent glycoconjugates, each bearing a biotin side arm in addition to three different sugar ligands, have been synthesized on a solid support. The conjugates were assembled on an orthogonally protected pentaerythrityl tetramine core that was anchored to the support through a backbone amide linker. Peptide coupling chemistry was applied to elongate three of the branches with β-alanine and a fully
三价糖缀合物,除了三个不同的糖配体外,每个都带有一个生物素侧臂,已在固体支持物上合成。缀合物组装在正交保护的季戊四醇四胺核心上,该核心通过主链酰胺接头锚定到支持物上。应用肽偶联化学以用β-丙氨酸和完全酰化的糖基乙酸延长三个分支。第四个分支被乙酰丙酸化并用氨基氧基衍生的 D-生物素肟化,然后酸解释放到溶液中。通过甲醇中甲醇催化的酯交换去除酰基保护基团。