First synthesis of the branched inner core trisaccharide α-Glcp-(1→5)[α-Kdo-(2→4)]-α-Kdo related to Moraxellaceae lipopolysaccharides.
Good stereoselectivity and a high yield for α-glucosylation of a Kdo disaccharide.
Further extension gave tetra- and pentasaccharide fragments of the Acinetobacter haemolyticus LPS.