The invention relates to substituted anionic compounds consisting of a backbone made up of a discrete number u of between 1 and 8 (1≦u≦8) of identical or different saccharide units, linked via identical or different glycosidic bonds, said saccharide units being chosen from the group consisting of hexoses in cyclic form or in open reduced form, which are randomly substituted. It also relates to the process for the preparation thereof and to the pharmaceutical compositions comprising same.
