Peptide and glycopeptide sequences of the homophilic recognition site of epithelial
cadherin (E-cadherin) were synthesized by solid-phase technique based on acid-sensitive
Wang anchor according to Fmoc strategy. Fmoc serine building blocks with TN-, T-, (2-6)-sialyl T-antigen and β-N-acetylglucosamine side chains were prepared for the construction of E-cadherin glycopeptides.
The T- and (2-6)-sialylT-serine derivatives have been obtained by chemical glycosylations
of the TN-antigen serine derivative carrying Fmoc/tert-butyl ester protecting group combination. According to NOESY and ROESY NMR experiments,
E-cadherin(glyco)peptides not acylated at the N-terminus prefer turn-type conformations
in water.
peptides - glycopeptides - solid-phase synthesis - glycosylation - oligosaccharides