Oligosaccharide derivatives and process for producing the same

Abstract

An oligosaccharide derivative, at higher homogeneity than fucose polysaccharide and rhamnose polysaccharide and with greater antiulcer effects, which is represented by the following general formula: Y—OCH(CH2NHR)2 wherein, Y represents an oligofucose or oligorhamnose at a polymerization number of 2 to 20, where the hydroxyl groups may or may not be partially modified in the form of sulfate ester, and R represents phenyl group, a higher alkylphenyl group, a higher alkyl group or —(CH2)n—NHX wherein n is an integer of 1 to 10 and X represents a higher alkanoyl group or an alkylamino group.

Dependencies are inferred from the claim text.