An object of the invention is to obtain a preparation which shows enhanced effectiveness and safety compared to tacrolimus, has the concentration in blood maintained at a constant level without individual differences, whereby the control of the amount of administration depending on the blood kinetics (blood trough concentration) becomes unnecessary. The present invention relates to a polymeric derivative of tacrolimus, in which a polyethylene glycol segment and an alcoholic hydroxy group of tacrolimus are bonded to side-chain carboxy groups of a polyaspartic acid derivative.
本发明的目的是获得一种制剂,与
他克莫司相比,该制剂显示出更高的有效性和安全性,其在血液中的浓度保持在一个恒定的
水平,没有个体差异,从而无需根据血液动力学(血槽浓度)控制给药量。本发明涉及一种
他克莫司的聚合物衍
生物,其中聚
乙二醇段和
他克莫司的醇羟基与聚
天冬氨酸衍
生物的侧链羧基键合。