Trisaccharides related to the core chain of human blood group determinants were synthesized by way of the phthalimido-chloride method; namely, β-D-Galp-(1 → 3)-β-D-GlcNAcp-(1 → 6)-D-Galp (3), β-D-Galp-(1 → 3)-β-D-GlcNAcp-(1 → 3)-D-Galp (5), β-D-Galp-(1 → 4)-β-D-GlcNAcp-(1 → 6)-D-Galp (4), and β-D-Galp-(1 → 4)-β-D-GlcNAcp-(1 → 3)-D-Galp (6).
Faisant appel à la méthode du chlorure phtalimide, on a synthétisé les trisaccharides correspondant à la chaîne centrale des déterminants du groupe sanguin humain: β-D-Galp-(1 → 3)-β-D-GlcNAcp-(1 → 6)-D-Galp (3), β-D-Galp-(1 → 3)-β-D-GlcNAcp(1 → 3)-D-Galp (5), β-D-Galp-(1 → 4)-β-D-GlcNAcp-(1→6)-D-Galp (4) et β-D-Galp-(1 → 4)-β-D-GlcNAcp-(1 → 3)-D-Galp (6).