Synthetic studies on novel fucosylated glycosphingolipids from the millipede, Parafontaria laminata armigera

A novel glycosphingolipid, β-d-Manp-(1→4)-[(α-l-Fucp-(1→3)]-β-d-Glcp-(1→1)-Cer, from the millipede, Parafontaria laminata armigera, was synthesized. A key reaction of this synthetic procedure is the formation of a spiro-orthoester and its reduction for β-selective mannosylation.