condensation on a solid support. In order to facilitate detachment of the protected glycopeptides from the resin, a new allyl ester type of linker, which is cleavable by Pd(O)-catalysis, was designed and used in combination with the commercial acid-labile Sieber amide resin for the solid-phase synthesis. Glycopeptide blocks consisting of [O-(2,3,4-tri-O-acetyl-D-xylosyl)-L-seryl-L-glycine]n (n = 1 - 8) were produced
通过涉及在固体支持物上的嵌段缩合的会聚方法,合成了Serglycin的原型糖肽基片段,即具有重复L-seryl-L-glycine的特征肽序列的蛋白聚糖。为了促进受保护的糖肽与
树脂的分离,设计了一种新的烯丙基酯型连接基,该连接基可通过Pd(O)催化裂解,并与市售酸不稳定的Sieber酰胺
树脂结合使用相合成。由[O-(2,3,4-三-O-乙酰基-
D-木糖基)-
L-丝氨酸-L-甘
氨酸] n(n = 1-8)组成的糖肽嵌段以高收率生产。溶液中的嵌段缩合也成功地合成了十六肽(n = 8)。