Synthesis of Tn and sialyl Tn building blocks for solid phase glycopeptide synthesis
作者:Mikael Elofsson、Jan Kihlberg
DOI:10.1016/0040-4039(95)01515-9
日期:1995.10
blocks for direct use in Fmoc solid phase glycopeptide synthesis have been prepared in 3 and 5 steps, respectively, from p-cresyl 2-azido-2-deoxy-3,6-di-O-tert-butyldimethylsilyl-1-thio-β-D-galactopyranoside (3). The silyl protective groups used for the GalNAc moiety of the Tn building block may be removed simultaneously with glycopeptide cleavage from the solid phase under acidic conditions.
TN(GalNAcα1→ Ò -Thr)和唾液酸Tn(NeuAcα2→6GalNAcα1→ ö -Thr)在3层5的步骤,分别制备了用于在Fmoc固相合成的糖肽直接使用积木,从p -cresyl 2-叠氮基2-脱氧-3,6-二-O-叔丁基二甲基甲硅烷基-1-硫代-β-D-吡喃半乳糖苷(3)。可以在酸性条件下与糖肽从固相上裂解同时除去用于Tn结构单元的GalNAc部分的甲硅烷基保护基。