Hyaluronic acid modification products and drug carriers using them
    5.
    发明授权
    Hyaluronic acid modification products and drug carriers using them 有权
    透明质酸改性产品和使用它们的药物载体

    公开(公告)号:US07767806B2

    公开(公告)日:2010-08-03

    申请号:US10571005

    申请日:2004-09-08

    IPC分类号: C07H5/04 C07H1/00 A61K31/728

    摘要: A hyaluronic acid modification product includes a polymer bonded to hyaluronic acid, the polymer being polylactic acid, polyglycolic acid or lactic acid-glycolic acid copolymer, providing a drug carrier which efficiently encapsulates low molecular weight drugs and provides sustained-release over a long term, control of blood residence, is well dispersible in an aqueous solution, and has excellent biocompatibility.

    摘要翻译: 透明质酸改性产品包括与透明质酸结合的聚合物,聚合物是聚乳酸,聚乙醇酸或乳酸 - 乙醇酸共聚物,提供有效地包封低分子量药物并长期持续释放的药物载体, 血液停留的控制在水溶液中分散性良好,生物相容性优异。

    Process for producing water-soluble hyaluronic acid modification
    9.
    发明申请
    Process for producing water-soluble hyaluronic acid modification 有权
    生产水溶性透明质酸改性方法

    公开(公告)号:US20090148534A1

    公开(公告)日:2009-06-11

    申请号:US11662087

    申请日:2005-09-07

    IPC分类号: A61K9/14 C07H1/00 C07H3/00

    摘要: The present invention provides a water-soluble modified HA practically used as a drug carrier and a production method thereof. The present invention provides: a water-soluble modified hyaluronic acid, the residence time in blood of which is elongated to a practical level, which is produced by introducing a substituent into the carboxy group of the glucuronic acid of hyaluronic acid or a derivative thereof, via an amide bond, at a lower limit of an introduction rate of 5 mole % or more, using a BOP condensing agent in an aprotic polar solvent; and a production method thereof. Moreover, by cross-linking the modified hyaluronic acid, the present invention provides a hyaluronic acid gel capable of extremely long drug sustained-release even at the same cross-linking functional group introduction rate as that of the conventionally known gel.

    摘要翻译: 本发明提供实际上用作药物载体的水溶性改性HA及其制备方法。 本发明提供:通过将透明质酸的葡糖醛酸或其衍生物的羧基引入取代基而产生的水溶性改性透明质酸,其在血液中的停留时间延长到实用水平, 通过酰胺键,在非极性极性溶剂中使用BOP缩合剂,在5摩尔%以上的引入速率的下限; 及其制造方法。 此外,通过交联改性透明质酸,本发明提供即使以与常规已知凝胶相同的交联官能团引入速率也能够极长的药物持续释放的透明质酸凝胶。