ChemInform Abstract: Synthesis of Disaccharide Analogues of Methyl 4‐O‐α‐D‐Galactopyranosyl‐ β‐D‐galactopyranoside (“Methyl Urobioside”), the Minimum Structure Recognized by p‐Fimbriated E. coli.

Glycosidation of the rhamnoside (Ic), prepared from (Ia) by benzoylation, acidic hydrolysis, and partial benzoylation of the resulting diol, with the galactoside (II) gives the disaccharide (III) which is deblocked to yield (IV).