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    • 3. 发明申请
    • LIGANDS FOR IMPROVING METAL CHELATE FORMATION KINETICS
    • 用于改进金属烧结形成动力学的配体
    • WO1993015771A1
    • 1993-08-19
    • PCT/US1993001013
    • 1993-02-05
    • MALLINCKRODT MEDICAL, INC.
    • MALLINCKRODT MEDICAL, INC.SRINIVASAN, Ananthachari
    • A61K49/02
    • C07K14/815A61K51/0478A61K51/088A61K2121/00A61K2123/00C07B59/004C07D213/40C07D213/64C07D213/68C07F13/005C07K14/6555
    • Amide-thiolate ligands having improved metal chelate formation kinetics are disclosed. The ligands include an amine to facilitate rapid formation of an amine-amide-thiolate intermediate complex, followed by transfer of the metal to or conversion of the ligand to a thermodynamically stable amide-thiolate complex. In one embodiment of the invention, the amine is a tertiary amine, or its equivalent, strategically located to facilitate complex formation. In another embodiment of the invention, the amine is part of pyridine containing a lower alkoxy substituent in the 2 or 4 ring position. O-dealkylation occurs upon complexation causing the amine to become a vinylogous amide as part of a thermodynamically stable amide-thiolate complex. The amide-thiolate ligands of the present invention may be used for post formed labeling of biological substances for use in the fields of diagnosis and therapy.
    • 公开了具有改进的金属螯合物形成动力学的酰胺 - 硫醇盐配体。 配体包括胺以促进胺 - 酰胺 - 硫醇盐中间体络合物的快速形成,然后将金属转移到或将配体转化为热力学稳定的酰胺 - 硫醇盐复合物。 在本发明的一个实施方案中,胺是一种叔胺或其等同物,其策略性定位以促进复合物形成。 在本发明的另一个实施方案中,胺是在2或4环位置含有低级烷氧基取代基的吡啶的一部分。 O-脱烷基化在络合时发生,导致胺作为热力学稳定的酰胺 - 硫醇盐络合物的一部分而成为维仁酰胺。 本发明的酰胺 - 硫醇酸酯配体可用于在诊断和治疗领域中用于生物物质的后成形标记。
    • 4. 发明申请
    • RADIOLABELED PEPTIDE COMPOSITIONS FOR SITE-SPECIFIC TARGETING
    • 用于场地特异性靶向的无定形肽组合物
    • WO1996040291A1
    • 1996-12-19
    • PCT/US1996009384
    • 1996-06-06
    • MALLINCKRODT MEDICAL, INC.
    • MALLINCKRODT MEDICAL, INC.SRINIVASAN, AnanthachariDYSZLEWSKI, Mary, MarmionBUGAJ, Joseph, E.
    • A61K51/00
    • C07K14/6555A61K51/083A61K51/088
    • This invention relates to radiolabeled peptide compositions for radiopharmaceutical use and, more specifically, to radiolabeled peptides for diagnostic or therapeutic use having an unmodified carboxy terminal amino acid. The radiopharmaceutical composition may be used for targeting a selected biological site. The radiolabeled peptide is characterized by having its carboxy terminal amino acid in its carboxylic acid form and the peptide is coupled to a diagnostic or therapeutic radionuclide by a chelating agent. The radiopharmaceutical composition preferably comprises a radiolabeled peptide selected from the group consisting of somatostatin, an analog of somatostatin, a derivative of somatostatin and peptides capable of binding to the somatostatin receptor, where the peptide is coupled to a diagnostic or therapeutic radionuclide by a chelating agent has its carboxy terminal amino acid in its carboxylic acid form.
    • 本发明涉及用于放射性药物用途的放射性标记肽组合物,更具体地,涉及具有未修饰的羧基末端氨基酸的用于诊断或治疗用途的放射性标记肽。 放射性药物组合物可以用于靶向选定的生物部位。 放射性标记的肽的特征在于其羧基末端氨基酸为羧酸形式,肽通过螯合剂偶联至诊断或治疗放射性核素。 放射性药物组合物优选包含选自生长抑素,生长抑素类似物,生长抑素衍生物和能够结合生长抑素受体的肽的放射性标记肽,其中肽通过螯合剂偶联至诊断或治疗放射性核素 其羧基末端氨基酸呈羧酸形式。
    • 7. 发明申请
    • METAL CHELATES AS SPACER COMPOUNDS IN BIOLOGICALLY ACTIVE PEPTIDES
    • 金属螯合物作为生物活性肽中的间隔化合物
    • WO1994026295A1
    • 1994-11-24
    • PCT/US1994005412
    • 1994-05-13
    • MALLINCKRODT MEDICAL, INC.
    • MALLINCKRODT MEDICAL, INC.DUNN, T., JeffreySRINIVASAN, AnanthachariLYLE, Leon, R.RAJAGOPALAN, Raghavan
    • A61K37/02
    • A61K49/14C07K1/04C07K14/815
    • Ligands that are capable of forming metal complexes are incorporated directly into peptides at nonbiologically active locations. The metal complex serves as a bifunctional agent and as a spacer molecule. In one aspect of the invention, the ligands are prepared by replacing a nonbiologically active peptide spacer sequence with either Cys-Gly-Gly-Glu( gamma -)CO- (SEQ ID NO:1) or Cys-Gly-Gly-Lys( epsilon -)NH-CO(CH2)2-CO- (SEQ ID NO:2). In these examples, unnatural peptide bonds are used to attach the ligand to the terminal end of the peptide. Peptides incorporating such ligands are also disclosed. Other spacer ligands which may be incorporated into peptides include the following natural peptide sequences: -Cys-Gly-His-, -Asp-Gly-Cys-, -Glu-Gly-Cys-, -Gly-Asp-Cys-, and -Gly-Glu-Cys-. Unnatural tripeptides which function as spacer ligands include: -Cys-Gly-(imidazolyl glycyl)-, -isoCys-Gly-(imidazolyl glycyl)-, and -isoCys-Gly-His-. When the above peptide sequences are present in a nonbiologically active peptide spacer, they are able to form metal complexes with desired metal ions, and the resulting complexes serve as bifunctional agents and as spacer molecules in the peptide.
    • 能够形成金属络合物的配体在非生物活性位置直接并入肽中。 金属络合物用作双官能剂和间隔分子。 在本发明的一个方面,通过用Cys-Gly-Gly-Glu(γ - )CO-(SEQ ID NO:1)或Cys-Gly-Gly-Lys(SEQ ID NO:1)替代非生物活性肽间隔序列 ε-)NH-CO(CH 2)2 -CO-(SEQ ID NO:2)。 在这些实施例中,使用非天然肽键将配体连接到肽的末端。 还公开了掺入这种配体的肽。 可以并入肽中的其它间隔配体包括以下天然肽序列:-Cys-Gly-His-,-Asp-Gly-Cys-,-Glu-Gly-Cys-,-Gly-Asp-Cys-和 - 甘氨酸 - 谷氨酸 - Cys-。 用作间隔基配体的非天然三肽包括:-Cys-Gly-(咪唑基甘氨酰基) - , - iSysys-Gly-(咪唑基甘氨酰基) - 和-i-Syysys-Gly-His-。 当上述肽序列存在于非生物活性肽间隔物中时,它们能够与期望的金属离子形成金属络合物,并且所得复合物用作双功能试剂和肽中的间隔分子。