Chitin chitosan oligomer having 2,5-anhydromannitol group or...

Details Chitin chitosan oligomer having 2,5-anhydromannitol group or... Chitin chitosan oligomer having 2,5-anhydromannitol group or...

C - Chemistry, Metallurgy

08

B

260/219

C08B 37/08 (2006.01) C07H 3/10 (2006.01) C07H 17/04 (2006.01)

Patent

CA 2024115

A chitin oligosaccharide which is a chitin oligomer having 2,5-anhydromannose group or a chitosan oligosaccharide which is a chitosan oligomer having 2,5-anhydromannose group a structure of the formula shown below at a terminal end: (see formula I) wherein it can be prepared by allowing chitin or chitosan to react with nitrous acid at a temperature of 10°C or lower in an aqueous solution with a hydrogen ion concentration of 1 to 6 to effect deamination reaction and pinacol rearrangement reaction, and further reducing this with a reducing agent, a chitin oligosaccharide which is a chitin oligomer having 2,5-anhydromannitol group or a chitosan oligosaccharide which is a chitosan oligomer having 2,5-anhydromannitol group having a structure of the formula shown below at an end: (see formula II)

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