A concise synthesis of arabinogalactan with β-(1→6) galactopyranose backbone and α-(1→2) arabinofuranose side chains

Penta- and octasaccharides composed of β-(1→6)-linked galactose backbone with α-(1→2)-linked arabinose branches were synthesized through coupling of α-(1→5)-linked arabinofuranosyl disaccharide donor with a tri- and tetrasaccharide backbone at C-2, respectively.