POLYETHYLENE GLYCOL DERIVATIVE, PREPARATION METHOD THEREFOR, AND POLYETHYLENE GLYCOL HYDROGEL ENABLING FAST CROSSLINKING REACTION
申请人:Changchun Institute Of Applied Chemistry Chinese
Academy Of Sciences
公开号:EP3974462A1
公开(公告)日:2022-03-30
The present invention provides a polyethylene glycol derivative comprising a repeat unit having the structure of Formula (I) and a terminal group having the structure of Formula (II). The polyethylene glycol derivative provided by the present invention has good biocompatibility, due to the repeat unit having the structure of Formula (I); and can react with various groups such as amino, (acyl)hydrazino, and aminooxy with a fast reaction rate under mild reaction conditions, due to the o-phthalaldehyde terminal group having the structure of Formula (II). The polyethylene glycol derivative provided by the present invention is mixed with polyethylene glycol having an amino-containing terminal group in an aqueous medium, to rapidly form a chemically cross-linked hydrogel material. The hydrogel material has mild preparation conditions, fast gel-forming speed, high mechanical strength, and good stability. This polyethylene glycol hydrogel can be applied as drug sustained-release carrier, tissue engineering scaffold, etc. in the field of biomedical materials.
本发明提供了一种聚乙二醇衍生物,其包含具有式(I)结构的重复单元和具有式(II)结构的末端基团。本发明提供的聚乙二醇衍生物由于重复单元具有式(I)结构,因此具有良好的生物相容性;由于邻苯二甲醛末端基团具有式(II)结构,因此可以在温和的反应条件下以较快的反应速率与氨基、(酰基)肼基、氨基氧基等多种基团反应。将本发明提供的聚乙二醇衍生物与具有含氨基末端基团的聚乙二醇在水介质中混合,可快速形成化学交联水凝胶材料。该水凝胶材料制备条件温和,凝胶形成速度快,机械强度高,稳定性好。这种聚乙二醇水凝胶可作为药物缓释载体、组织工程支架等应用于生物医学材料领域。