Glycohexadecapeptides representing the tandem repeat sequence of the epithelial mucin MUC4 were prepared by applying a solid-phase methodology. The required glycosyl amino acid building blocks containing the tumour-associated saccharide antigens TN-, T,- sialyl-TN, (2,6)- and (2,3)-sialyl-T were synthesized according to a straightforward biomimetic strategy by stepwise extension of the saccharide side chain of a Fmoc-protected galactosamine threonine tert-butyl ester.
通过采用固相方法学,制备了代表上皮粘蛋白MUC4串联重复序列的甘露肽。利用逐步延伸Fmoc保护的半
乳糖胺
苏氨酸叔丁酯糖侧链的简易仿生策略,合成了包含肿瘤相关糖抗原TN-、T-、
唾液酸TN-、(2,6)-和(2,3)-
唾液酸T的所需糖基
氨基酸构建单元。