Parasite glycoconjugates. Part 9. Synthesis of dec-9-enyl beta-D-galactopyranosyl-(1 -> 4)-alpha-D-mannopyranosyl phosphate and its epimers at the D-galactose moiety, substrate analogues for the elongating alpha-D-mannopyranosylphosphate transferase in the Leishmania

A set of phosphodisaccharides, substrate analogues, which will be used to s tudy the acceptor substrate specificity of the Leishmania biosynthetic enzy mes, have been synthesized using the trichloroacetimidate method for the gl ycosylation reactions, S(N)2 nucleophilic displacement of triflic esters fo r epimerization and the glycosyl hydrogenphosphonate method for phosphoryla tion.