Synthesis of Sulfated Galactocerebrosides from an Orthogonal β-D-Galactosylceramide Scaffold for the Study of CD1–Antigen Interactions
作者:Federica Compostella、Silvia Ronchi、Luigi Panza、Sabrina Mariotti、Lucia Mori、Gennaro De Libero、Fiamma Ronchetti
DOI:10.1002/chem.200501586
日期:2006.7.17
activates T cells. To assess the role of the position of the sulfate in T cell activation, the synthesis of three beta-D-galactosylceramides, variously bearing a sulfate at position 2, 4, or 6 of galactose, has been planned and carried out. The compounds were synthesized by an orthogonal sulfation strategy from a common beta-D-galactosylceramide scaffold, which was in turn obtained through an efficient glycosylation
CD1a蛋白与硫化物(3-O-磺基-β-D-半乳糖基神经酰胺)结合形成抗原复合物,该复合物与T细胞受体相互作用并激活T细胞。为了评估硫酸盐的位置在T细胞活化中的作用,已经计划并进行了三种在半乳糖的2、4或6位带有硫酸盐的β-D-半乳糖基神经酰胺的合成。这些化合物是通过正交硫酸化策略从常见的β-D-半乳糖基神经酰胺支架合成的,该支架依次通过完全正交保护的半乳糖亚氨酸半乳糖苷和3-O-苯甲酰基叠氮鞘氨醇之间的有效糖基化反应获得。与天然硫化物相比,三种硫酸化化合物在CD1a介导的T细胞活化中的免疫学评估,