A cationic oligomer of a saccharide, wherein the saccharide is functionalized by a cationic group, for example an ammonium, phosphonium, imidazolium, or pyridinium group. In a preferred embodiment, the cationic oligomer of a saccharide is a cationic cyclodextrin. There is also provided a use of the cationic oligomer of a saccharide as a chiral agent for resolving enantiomers by a chromatographic method or an asymmetric synthesis.