Stereoselective synthesis of sialylated tumor-associated glycosylamino acids

Abstract

Suitably protected sialyl T(N) and 2,6-sialyl T tumor-associated carbohydrate antigen-derived amino acids have been prepared stereoselectively using an oxazolidinone-derived sialoside donor. These glycosylamino acids can be employed directly in the solid-phase synthesis of glycopeptides, as demonstrated by the efficient preparation of tumor-associated MUC1 glycopeptide fragments.