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    • 6. 发明申请
    • THIOL-MODIFIED HYALURONAN
    • THIOL改性HYALURONONAN
    • WO2002068383A2
    • 2002-09-06
    • PCT/US2002/005081
    • 2002-02-21
    • ANIKA THERAPEUTICS, INC.
    • BULPITT, Paul, C., A.SHERWOOD, Charles, H.SADOZAI, Khalid, K.
    • C07C323/25
    • C07C323/25C07C323/32C07C323/37C07C323/44C07C335/08C07C335/16C08B37/0072
    • The present invention relates to biscarbodiimides, thiourea derivatives, urea derivatives, and cross-linked hyaluronan derivatives having at least one intramolecular disulfide bond, and methods of preparation thereof. The invention also includes thiolated hyaluronan derivatives and salts thereof having at least one pendant thiol group or a modified pendant thiol group, and methods of preparation thereof. An example of a modified pendant thiol group is a sulfhydryl group linked to a small molecule such as a bioactive agent, for example a drug or pharmaceutically active moiety. A hyaluronan derivative having a sulfhydryl group linked to a pharmaceutically active moiety is useful as a sustained or controlled release drug delivery vehicle. Compositions containing the hyaluronan derivatives of the invention can reversibly viscosify in vivo or in vitro , in response to mild changes in condition, and are thus useful in ophthalmic surgery and in tissue engineering.
    • 本发明涉及双碳二亚胺,硫脲衍生物,脲衍生物和具有至少一个分子内二硫键的交联透明质酸衍生物及其制备方法。 本发明还包括硫醇化透明质酸衍生物及其盐,其具有至少一个硫醇基侧基或修饰侧链巯基,及其制备方法。 修饰的侧链硫醇基团的实例是与小分子连接的巯基,例如生物活性剂,例如药物或药学活性部分。 具有与药学活性部分连接的巯基的透明质酸衍生物可用作持续或控释药物递送载体。 包含本发明的透明质酸衍生物的组合物可以在体内或体外可逆地粘稠,以响应于条件的轻微变化,因此可用于眼科手术和组织工程。