The present invention provides a glycosaminoglycan derivative in which a group derived from glycosaminoglycan and a group derived from a physiologically active substance having at least one of a carboxy group and a hydroxy group are coupled by covalent bond with a spacer therebetween, in which the spacer is selected in accordance with the decomposition rate of the covalent bond to the group derived from the physiologically active substance.
本发明提供了一种糖
氨基聚糖衍
生物,其中从糖
氨基聚糖衍生的基团和从至少具有羧基或羟基之一的生理活性物质衍生的基团通过之间的间隔物以共价键偶联,其中该间隔物根据从生理活性物质衍生的基团的共价键的分解速率进行选择。