Cross-linkers with high reactivity and solubility and their use in the preparation of conjugates for targeted delivery of small molecule drugs
    6.
    发明授权
    Cross-linkers with high reactivity and solubility and their use in the preparation of conjugates for targeted delivery of small molecule drugs 失效
    具有高反应性和溶解性的交联剂及其在制备用于靶向递送小分子药物的缀合物中的用途

    公开(公告)号:US06913748B2

    公开(公告)日:2005-07-05

    申请号:US10633616

    申请日:2003-08-05

    CPC分类号: A61K47/6803 A61K47/6889

    摘要: Disclosed is a method of making conjugates of cell binding agents and small molecule drugs comprising reacting a cell binding agent with a bifunctional cross-linking moiety to thereby provide the cell binding agent with a reactive disulfide group and then reacting the modified cell binding agent with a small molecule drug comprising a free thiol group. Bifunctional cross-linking moieties are also disclosed.

    摘要翻译: 公开了一种制备细胞结合剂和小分子药物的缀合物的方法,包括使细胞结合剂与双功能交联部分反应,从而向细胞结合剂提供活性二硫基团,然后使修饰的细胞结合剂与 包含游离巯基的小分子药物。 还公开了双功能交联部分。

    Process for the preparation and purification of thiol-containing maytansinoids
    7.
    发明授权
    Process for the preparation and purification of thiol-containing maytansinoids 有权
    用于制备和纯化含硫醇的美登木素生物碱的方法

    公开(公告)号:US06333410B1

    公开(公告)日:2001-12-25

    申请号:US09641348

    申请日:2000-08-18

    IPC分类号: C07D49112

    CPC分类号: C07D498/18 A61K47/6803

    摘要: The present invention provides a process for the preparation and purification of thiol-containing maytansinoids comprising the steps of: (1) reductive hydrolysis of a maytansinoid C-3 ester with a reducing agent selected from the group consisting lithium trimethoxyaluminum hydride (LiAl(OMe)3H), lithium triethoxyaluminum hydride (LiAl(OEt)3H), lithium tripropoxyaluminum hydride (LiAl(OPr)3H), sodium trimethoxyaluminum hydride (NaAl(OMe)3H), sodium triethoxyaluminum hydride (NaAl(OEt)3H) and sodium tripropoxyaluminum hydride (NaAl(OPr)3H) to yield a maytansinol; (2) purifying the maytansinol to remove side products when present; (3) esterifying the purified maytansinol with a carboxylic acid to yield a mixture of an L- and a D-aminoacyl ester of maytansinol; (4) separating the L-aminoacyl ester of maytansinol from the reaction mixture in (3); (5) reducing the L-aminoacyl ester of maytansinol to yield a thiol-containing maytansinoid; and (6) purifying the thiol-containing maytansinoid.

    摘要翻译: 本发明提供了一种制备和纯化含硫醇的美登木素生物碱的方法,包括以下步骤:(1)用选自三氯化铝氢化铝(LiAl(OMe))的还原剂还原水解美登木素生物碱C-3酯, 3H),三乙氧基氢化铝锂(LiAl(OEt)3 H),三丙氧基氢化铝锂(LiAl(OPr)3 H),三乙氧基氢化铝钠(NaAl(OMe)3 H),三乙氧基氢化铝钠(NaAl(OEt) (NaAl(OPr)3 H),得到美登素; (2)当存在时,净化美登素以除去副产物; (3)用羧酸酯化纯化的美登醇,得到美登素的L-和D-氨酰基酯的混合物; (4)从(3)中的反应混合物中分离出美登素的L-氨基酰基酯; (5)还原美登素的L-氨基酰基酯以产生含硫醇的美登木素生物碱; 和(6)纯化含硫醇的美登木素生物碱。

    Process for the preparation and purification of thiol-containing maytansinoids
    8.
    再颁专利
    Process for the preparation and purification of thiol-containing maytansinoids 有权
    用于制备和纯化含硫醇的美登木素生物碱的方法

    公开(公告)号:USRE39151E1

    公开(公告)日:2006-06-27

    申请号:US10410143

    申请日:2003-04-10

    IPC分类号: C07D491/12 C07D498/06

    CPC分类号: C07D498/18 A61K47/6803

    摘要: The present invention provides a process for the preparation and purification of thiol-containing maytansinoids comprising the steps of: (1) reductive hydrolysis of a maytansinoid C-3 ester with a reducing agent selected from the group consisting lithium trimethoxyaluminum hydride (LiAl (OMe)3H), lithium triethoxyaluminum hydride (LiAl(OEt)3H), lithium tripropoxyaluminum hydride (LiAl (OPr)3H), sodium trimethoxyaluminum hydride (NaAl (OMe)3H), sodium triethoxyaluminum hydride (NaAl(OEt)3H) and sodium tripropoxyaluminum hydride (NaAl(OPr)3H) to yield a maytansinol; (2) purifying the maytansinol to remove side products when present; (3) esterifying the purified maytansinol with a carboxylic acid to yield a mixture of an L- and a D-aminoacyl ester of maytansinol; (4) separating the L-aminoacyl ester of maytansinol from the reaction mixture in (3); (5) reducing the L-aminoacyl ester of maytansinol to yield a thiol-containing maytansinoid; and (5) purifying the thiol-containing maytansinoid.

    摘要翻译: 本发明提供了一种制备和纯化含硫醇的美登木素生物碱的方法,包括以下步骤:(1)用选自三氯化铝氢化铝(LiAl(OMe))的还原剂还原水解美登木素生物碱C-3酯, H 3),三乙氧基氢化铝锂(LiAl(OEt)3 H),三丙氧基氢化铝锂(LiAl(OPr)3 H),钠 氢化三乙氧基铝(NaAl(OMe)3 H),三乙氧基氢化铝钠(NaAl(OEt)3 H)和三氢氧化铝氢化钠(NaAl(OPr)3) / H),得到美登素; (2)当存在时,净化美登素以除去副产物; (3)用羧酸酯化纯化的美登醇,得到美登素的L-和D-氨酰基酯的混合物; (4)从(3)中的反应混合物中分离出美登素的L-氨基酰基酯; (5)还原美登素的L-氨基酰基酯以产生含硫醇的美登木素生物碱; 和(5)纯化含硫醇的美登木素生物碱。