The present invention provides hyaluronic acid derivatives including one or more of each of repeating units represented by the formulae (Ia), (Ib), and (Ic) in which certain cationic sites, certain hydrophobic sites, and certain hydrophilic sites have been introduced. In addition, the present invention provides complexes of the hyaluronic acid derivatives with a drug and pharmaceutical compositions including the hyaluronic acid derivatives, in particular, complexes of the hyaluronic acid derivatives with a drug.
                            本发明提供了透明质酸衍
生物,包括式(Ia)、(Ib)和(Ic)所代表的重复单元中的每个单元中的一个或多个,其中引入了某些阳离子位点、某些疏
水位点和某些亲
水位点。此外,本发明还提供了透明质酸衍
生物与药物的复合物以及包括透明质酸衍
生物的药物组合物,特别是透明质酸衍
生物与药物的复合物。