The chemical synthesis of a cyclic oligosaccharide derivative with branching

Article abstract of DOI:10.1016/S0040-4039(98)02234-5

A cyclic oligosaccharide derivative was synthesized by cationic ring- opening polymerization of an anhydrodisaccharide derivative under high vacuum in dichloromethane with 20 mol% of PF₅ as initiator. Analysis of the spectral results showed that the oligomer chain is composed of only 3 glucose units connected by α-1,6 linkages with a glucopyranosyl branching unit at C- 4 of each sugar residue in the main chain.