Polysaccharide-polyamine copolymer and use thereof in reducing uric acid concentration in plasma
申请人:Yang Dazhi
公开号:US10639325B2
公开(公告)日:2020-05-05
Disclosed is a pharmaceutical composition for treating hyperuricemia (HUA). The pharmaceutical composition includes a polysaccharide-polyamine copolymer and a pharmaceutically acceptable salt thereof as active ingredients. The polysaccharide-polyamine copolymer is formed by copolymerization of the following two parts: a selectively oxidized polysaccharide with 2,3-dialdehydo, and a polyamine with an amino functional group; the polyamine with an amino functional group and the selectively oxidized polysaccharide with 2,3-dialdehydo can form a net structure by means of covalent crosslinking, resulting in a hydrogel with an amino functional group or a granular polysaccharide-polyamine copolymer, wherein the amino functional group in the hydrogel with an amino functional group or the granular polysaccharide-polyamine copolymer can be protonated so as to form a cationic copolymer of a three-dimensional network structure having a protonated site, and the nitrogen content of the cationic copolymer and the nitrogen content of the polysaccharide-polyamine copolymer are above 12.3 wt %, and both the cationic copolymer and the polysaccharide-polyamine copolymer are water-insoluble.
本发明公开了一种用于治疗高尿酸血症(HUA)的药物组合物。该药物组合物包括作为活性成分的多糖-多胺共聚物及其药学上可接受的盐。多糖-多胺共聚物由以下两部分共聚而成:带有 2,3-二醛的选择性氧化多糖和带有氨基官能团的多胺;具有氨基官能团的多胺和具有 2,3-二脱氢的选择性氧化多糖可通过共价交联形成网状结构,从而形成具有氨基官能团的水凝胶或颗粒状多糖-多胺共聚物、其中,具有氨基官能团的水凝胶或颗粒状多糖-多胺共聚物中的氨基官能团可被质子化,从而形成具有质子化位点的三维网络结构的阳离子共聚物,且阳离子共聚物的氮含量和多糖-多胺共聚物的氮含量均高于 12.3 wt %,阳离子共聚物和多糖-多胺共聚物均不溶于水。