CERAMIC COMPOSITIONS
    3.
    发明申请
    CERAMIC COMPOSITIONS 审中-公开
    陶瓷组合物

    公开(公告)号:WO1985001936A1

    公开(公告)日:1985-05-09

    申请号:PCT/US1984001736

    申请日:1984-10-26

    CPC classification number: C04B35/645 C04B35/10 C04B35/119 C04B35/185 F02B3/06

    Abstract: Novel transformation toughened ceramic compositions comprising finely divided ZrO2-HfO2 solid solution particles dispersed in a Al2O3-Cr2O3 (alumina) or 3Al2O3 . 2SiO2-3Cr2O3 . 2SiO2 (mullite) solid solution matrix phase. It is found that increased hardness and modulus associated with higher relative Cr2O3 content (e.g. 20 mole %) in the matrix phase and increased fracture toughness associated with higher relative HfO2 content (e.g. 10 to 20 mole %) in the disperse phase represent viable and improved ceramic compositions. Such transformation toughened ceramic compsitions are considered useful in superhot light diesel engine applications, high temperature gas turbines and ultrahigh temperature ceramic heat exchangers.

    SYNTHESIS OF N-GLYCOSYLATED COMPOUNDS WITH THE USE OF A MILD, IODINE-CATALYZED REACTION
    6.
    发明申请
    SYNTHESIS OF N-GLYCOSYLATED COMPOUNDS WITH THE USE OF A MILD, IODINE-CATALYZED REACTION 审中-公开
    N-甲酰化合物的合成与使用微量的碘化反应

    公开(公告)号:WO1994007900A1

    公开(公告)日:1994-04-14

    申请号:PCT/US1993009036

    申请日:1993-09-23

    CPC classification number: C07H13/04 C07H11/00 C07H19/04 C07H19/16

    Abstract: The invention concerns N-glycosylated derivatives of nitrogen nucleophile compounds. The invention also concerns a mild, cost effective, stereoselective, regioselective, and generally applicable method for the preparation of N-glycosides by N-glycosylation of azide and amide nucleophile compounds. The method employs iodine in a catalytic amount that uniquely does not pose an environmental hazard. The invention provides efficient access to key intermediates for the synthesis inter alia of analogs of AZT and DDI and for the synthesis of conventional N-nucleoside antibiotic drugs and their novel N-glycosylated analogs.

    Abstract translation: 本发明涉及氮亲核化合物的N-糖基化衍生物。 本发明还涉及通过叠氮化物和酰胺亲核化合物的N-糖基化制备N-糖苷的温和,成本有效的立体选择性,区域选择性和通常适用的方法。 该方法采用催化量的碘,其独特地不会造成环境危害。 本发明提供了用于合成特别是AZT和DDI的类似物以及用于合成常规N-核苷抗生素药物及其新型N-糖基化类似物的关键中间体的有效接触。

    TARGETED DELIVERY OF GENES ENCODING CELL SURFACE RECEPTORS
    10.
    发明申请
    TARGETED DELIVERY OF GENES ENCODING CELL SURFACE RECEPTORS 审中-公开
    目标递送编码细胞表面受体的基因

    公开(公告)号:WO1992019749A1

    公开(公告)日:1992-11-12

    申请号:PCT/US1992003639

    申请日:1992-05-01

    CPC classification number: A61K48/00 A61K38/00 C07K14/705 C12N15/87

    Abstract: Molecular complexes for targeting a gene encoding a cell surface receptor to a specific cell in vivo and obtaining expression of the gene and insertion of the gene-encoded receptor in the cell membrane. An expressible gene encoding a desired cell surface receptor is complexed with a carrier of a cell-specific binding agent and a gene-binding agent. The cell-specific binding agent is specific for a cellular surface structure which mediates internalization of ligands by endocytosis. An example is the asialoglycoprotein receptor of hepatocytes. The gene-binding agent is a compound such as a polycation which stably complexes the gene under extracellular conditions and releases the gene under intracellular conditions so that it can function within a cell. The molecular complex is stable and soluble in physiological fluids and can be used in gene therapy to selectively transfect cells in vivo to provide for production, membrane insertion and function of a cellular surface receptor.

    Abstract translation: 分子复合物,用于靶向编码体内特定细胞的细胞表面受体的基因,并获得基因表达和基因编码的受体在细胞膜中的插入。 编码所需细胞表面受体的可表达基因与细胞特异性结合剂和基因结合剂的载体复合。 细胞特异性结合剂对通过内吞作用介导配体内化的细胞表面结构是特异性的。 一个例子是肝细胞的脱唾液酸糖蛋白受体。 基因结合剂是诸如聚阳离子的化合物,其在细胞外条件下稳定地复合基因并在细胞内条件下释放基因,使得其可以在细胞内起作用。 分子复合物是稳定的并且可溶于生理液体,可用于基因治疗以选择性转染体内细胞,以提供细胞表面受体的产生,膜插入和功能。

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