Sialyl Lewis X (SLe(X) analogues) containing beta-1-fucopyranosyl residues with an alkyl [-(CH2)(6)-] (1a), a heteroalkyl [-(CH2)(2)-O-(CH2)(3)-] (Ib)or a heterocycloalkyl [-2-cyclohexyl-O-(CH,),-] (2a) moiety were synthesised by silver ion promoted glycosylation. Further analogues where sialic acid was replaced by a second beta-L-fucopyranosyl (3a, 3b) or hydrogensulphate unit (4a, 4b) were also prepared.
Sialyl Lewis X (SLe(X) analogues) containing beta-1-fucopyranosyl residues with an alkyl [-(CH2)(6)-] (1a), a heteroalkyl [-(CH2)(2)-O-(CH2)(3)-] (Ib)or a heterocycloalkyl [-2-cyclohexyl-O-(CH,),-] (2a) moiety were synthesised by silver ion promoted glycosylation. Further analogues where sialic acid was replaced by a second beta-L-fucopyranosyl (3a, 3b) or hydrogensulphate unit (4a, 4b) were also prepared.