申请人:Rau Harald
公开号:US20120156259A1
公开(公告)日:2012-06-21
The present invention relates to biodegradable polyethylene glycol based water-insoluble hydrogels comprising backbone moieties which are interconnected by hydrolytically degradable bonds, the backbone moieties further comprising reactive functional groups, wherein the water-insoluble hydrogel is further characterized in that the ratio between the time period for the complete degradation of the hydrogel by hydrolysis of the degradable bonds into water-soluble degradation products comprising one or more backbone moieties and the time period for the release of the first 10 mol-% of water-soluble degradation products comprising one or more backbone moieties based on the total amount of backbone moieties in the hydrogel is greater than 1 and equal to or less than 2. The invention further relates to conjugates of such hydrogels with ligands or ligating groups, prodrugs and pharmaceutical compositions as well as their use in a medicament.
本发明涉及可生物降解的聚乙二醇基水不溶性水凝胶,其包含通过水解降解键相互连接的骨架基团,骨架基团进一步包括反应性功能团,其中水不溶性水凝胶的特征在于,通过水解降解可将可降解键分解为可溶于水的降解产物,包括一个或多个骨架基团,完全降解水凝胶所需的时间与基于水凝胶中所有骨架基团数量的第一个10摩尔%可溶性降解产物的释放时间之比大于1且小于等于2。本发明还涉及这种水凝胶与配体或配位基团的共轭物、前药和制药组合物以及它们在药物中的使用。