Patent ID: 6878819

Claim:
An oligosaccharide having the formula wherein A is H or a glycosidically β1-3 linked D-glucopyranosyl residue (Glcβ1-3), R 1 is OH, R 2 is H and R 3 is OH, acylamido or —NH-acyl or R 1 is H, R 2 is OH and R 3 is acetamido or —NHCOCH 3 ; B is H, an α-L-fucosyl or an α-L-fucosyl analogue, and R 4 is OH, acetamido or —NHCOCH 3 , the curved line between the saccharide units indicating that the monosaccharide 1 is β1-4 linked to monosaccharide 2 when B is linked to the position 3 of the monosaccharide 2, and the monosaccharide 1is β1-3 linked to monosaccharide 2 when B is linked to the position 4 of the monosaccharide 2, monosaccharide 1 is GalNAc only when monosaccharide 2 is Glc, n is 1 to 100, with the proviso that there is always at least one α-fucosyl or α-fucosyl analogous group present in the molecule, and p and k are 0 or 1, and 1≦m≦1000, X is a monosaccharide selected from the group consisting of Glc, GlcNAc, Gal or GalNAc, optionally in reduced form, or oligosaccharide containing one or more of said monosaccharide units, the monosaccharide 2 being β1-3 or β1-4 linked to saccharide X, Y is a spacer or linking group capable of linking X to Z, and Z is a mono- or polyvalent carrier molecule.