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    • 1. 发明授权
    • Liver-targeting agents and their synthesis
    • 肝靶向剂及其合成
    • US08552163B2
    • 2013-10-08
    • US12891004
    • 2010-09-27
    • Reiko Takasaka LeeYuan-Chuan LeeMei-Hui WangWuu-Jyh Lin
    • Reiko Takasaka LeeYuan-Chuan LeeMei-Hui WangWuu-Jyh Lin
    • C07H17/02C07C229/00
    • C07H15/04
    • This invention provides novel liver targeting agents and their synthetic methods. A liver targeting agent, with a lysine based nitrilotriacetic acid structure as backbone which acquires multivalency with saccharide groups, to bind with a galactosamine chain or lactose chain is disclosed. In particular, only one amino acid L-lysine is involved to provide trivalency. All carboxyl groups in Nε-benzyloxycarbonyl-Nα-dicarboxymethyl-L-lysine can be conjugated with three glycosides of ahGalNAc or ahLac in one step. This invention also provides a hexa-lactoside. In particular, the TFA-AHA-Asp was used to conjugate 2 molecules of NTA(ahLac)3. This invention also provides a method for adding a spacer between NTA and DTPA. The extended hepatocyte-specific glyco-ligand has higher 111In-radiolabelling yield than those non-extended.
    • 本发明提供新型肝靶向剂及其合成方法。 公开了以赖氨酸的次氮基三乙酸结构作为骨架的肝靶向剂,其以糖基取代多价,与半乳糖胺链或乳糖链结合。 特别地,仅涉及一个氨基酸L-赖氨酸以提供三价值。 Nepsilon-苄氧基羰基-Nalpha-二羧甲基-L-赖氨酸中的所有羧基可以在一个步骤中与ahGalNAc或ahLac的三种糖苷缀合。 本发明还提供了六乳糖苷。 特别地,TFA-AHA-Asp用于结合2分子的NTA(ahLac)3。 本发明还提供了一种在NTA和DTPA之间添加间隔物的方法。 延长的肝细胞特异性糖配体比未延长的肝细胞特异性糖配体具有更高的111In-放射性标记产率。