Synthesis of a Galactosylated 4-Hydroxylysine Building Block and Its Incorporation into a Collagen Immunodominant Glycopeptide
作者:Julien Marin、Jean-Paul Briand、Gilles Guichard
DOI:10.1002/ejoc.200700806
日期:2008.2
An analogue of the immunodominant glycopeptide from type II collagen encompassing residues 256–270 has been prepared by substituting β-D-galactopyranosyl-(2S,4R)-4-hydroxy-L-lysyl (Gal-4-Hyl) for β-D-galactopyranosyl-(2S,5R)-5-hydroxy-L-lysyl (Gal-5-Hyl) at position 264. The synthesis of the 4-hydroxylysine aglycon started from the known (2S,4S)-4-hydroxy-6-oxo-1,2-piperidinedicarboxylate (3) and involved
通过用 β-D-吡喃半乳糖基-(2S,4R)-4-羟基-L-赖氨酰 (Gal-4-Hyl) 代替 β-D 制备了来自 II 型胶原蛋白的免疫显性糖肽类似物,包含残基 256-270 -吡喃半乳糖基-(2S,5R)-5-羟基-L-赖氨酰 (Gal-5-Hyl) 在 264 位。 4-羟基赖氨酸苷元的合成从已知的 (2S,4S)-4-羟基-6 开始-oxo-1,2-piperidinedicarboxylate (3) 并涉及 3 的选择性开环、内酯形成和内酯与甘氨酯的 N-酰化。得到的 N-Fmoc 保护的 4-羟基赖氨酰-甘氨酸二肽衍生物以高产率进行半乳糖基化,得到适合固相肽合成的结构单元。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)