[Synthesis of xylose-containing glycopeptides that contain the amino acid sequence 4 bis 7 des NH2-terminus of the protein core structure of cattle skin proteodermatan sulfates].

The synthesis is described of alpha-beta-D-xylopyranosyl-L-serylglycyl-L-isoleucyl-glycine (7), a glycopeptide containing the amino acid sequence of the protein core-structure of beef-skin proteodermatan sulfate; coupling of N-protected O-XylpSer with protected GlyIleuGly followed by deprotection afforded 7.