Polysaccharide conjugates of biomolecules

Details Polysaccharide conjugates of biomolecules Polysaccharide conjugates of biomolecules

1997-08-08

1999-07-27

Tsang, Cecilia J.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Carbohydrate doai

514 59, 514367, 524 54, A01N 4304

Patent

active

059290498

ABSTRACT:
Compounds that are modified polysaccharides having pendant aldehyde functionalities are disclosed. Each of the aldehyde functionalities is attached through a linker to a position corresponding to a hydrogen atom of a different hydroxyl group of unmodified polysaccharide. Also disclosed is a method for introducing an amine-reactive functionality into a dextran. The method comprises (a) reacting the dextran with an alkylating agent having a functionality that reacts with an hydroxyl group of the dextran thereby forming an alkylated dextran wherein the alkylating agent has an olefin group and (b) treating the alkylated dextran to convert the olefin group to an amine-reactive functionality. A polysaccharide can be conjugated to a biomolecule by carrying out the above method and reacting the amine-reactive functionality with an amine functionality on the biomolecule to produce polysaccharide conjugated to the biomolecule.

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