LACTOSYLCERAMIDE DERIVATIVE AND ITS PRODUCTION

摘要

NEW MATERIAL:A compound expressed by formula I [A represents formula II ((m) is 10-14; R<2> represents H or 16-24C fatty acid residue optionally having R<1>O-group); R<1> represents OH-protecting group]. EXAMPLE:Benzylated lactosylceramide. USE:An intermediate for producing various sphingoglycoplipid derivatives. PREPARATION:A sialoglycolipid derivative expressed by formula III [B represents (substituted)sialic acid residue] is hydrolyzed preferably in the presence of a heteropolyacid catalyst (example; phosphotungstic acid or phosphomolybdic acid).