title: Galactan synthesis in a single step via oligomerization of monosaccharides.
abstract: Galactans ranging in length from one to five residues were prepared in a single step by treatment of the glycosyl donor 2,3,4-tri-O-benzoyl-β-D-galactopyranosyl fluoride with lanthanum perchlorate in the presence of an initiator alcohol. The product oligosaccharides were readily chromatographically separable. This oligomerization was used to synthesize a pentagalactan in a single step from monosaccharide building blocks in reasonable overall yields.
authors.affiliation: Department of Chemistry, Box H, Brown University, Providence, RI 02912, USA.
authors.forename: Marius
authors.initials: M
authors.lastname: Dräger
authors.affiliation: Department of Chemistry, Box H, Brown University, Providence, RI 02912, USA.
authors.forename: Amit
authors.initials: A
authors.lastname: Basu
keywords: arabinogalactan protein; glycosyl fluoride; glycosylation; oligosaccharides