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    • 72. 发明专利
    • Novel aminoglycoside
    • 新的氨基酸
    • JPS58213774A
    • 1983-12-12
    • JP9490082
    • 1982-06-04
    • Kowa Co
    • WATANABE ISAMUYAMAGUCHI TAKASHIKAMIYA KAZUHIROMORI TOSHITO
    • A61K31/35A61K31/351A61P31/04C07D309/10C07H15/224
    • C07H15/224C07D309/10
    • NEW MATERIAL:The aminoglycoside of formula I (R is H or aminoacyl).
      EXAMPLE: 2'-Deamino-5-de-0-methyl-KA-6606 II.
      USE: Useful as an antibacterial agent.
      PROCESS: The compound of formula I can be prepared e.g. by formylating the compound of formula II (R" is H or aminoacyl) which may be protected at the 1-, 4- and/or 6'-amino groups, dehydrating the resultant 2'-formylamino compound to 2'-isonitrile compound, and reducing the product. The formylation is carried out e.g. by reacting the compound of formula II with a formylation agent such as formic acetic anhydride, etc. The dehydration of the formed formylamino compound can be achieved by reacting with e.g. phosphorus oxychloride, etc. in the presence of a base such as triethylamine, and the reduction of the resultant isonitrile is carried out e.g. by reacting with tri-n-butylstannane.
      COPYRIGHT: (C)1983,JPO&Japio
    • 新材料:式Ⅰ的氨基糖苷(R为H或氨酰基)。 实施例2'-脱氨基-5-脱-O-甲基-KA-6606 II。 用途:用作抗菌剂。 方法:式I的化合物可以如 通过将可以在1-,4-和/或6'-氨基保护的式II化合物(R“是H或氨基酰基)甲酰化,将所得的2'-甲酰氨基化合物脱水成2'-异腈化合物 ,并减少产品。 甲酰化如 通过使式II化合物与甲酰化剂如甲酸乙酸酐等反应。所形成的甲酰氨基化合物的脱水可以通过与例如乙酸酐反应来实现。 磷酰氯等在碱例如三乙胺的存在下进行,并且所得异腈的还原如 通过与三正丁基锡烷反应。
    • 75. 发明专利
    • Novel aprosamine derivative
    • 新型APROSAMINE DERIVATIVE
    • JPS5775994A
    • 1982-05-12
    • JP15092680
    • 1980-10-27
    • Shionogi & Co Ltd
    • IGARASHI KIKUOHONMA TSUNETOSHI
    • A61K31/70A61K31/7028A61K31/7034A61K31/7036A61P31/04C07H15/224
    • C07H15/224Y02P20/55
    • NEW MATERIAL:The aprosamine derivative of formulaI(n is 0 or 1; the wavy line represents the axial of equatorial configuration), and its acid addition salt.
      EXAMPLE: 3-Amino-2-hydroxypropyl β-aprosaminide.
      USE: Antibacterial agent, bactericide, and disinfectant. It has strong antibacterial activity against Gram-positive and Gram-negative bacteria.
      PROCESS: The compound of formulaIis prepared by (1) protecting the 1, 3, 2' and 7'-position amino groups of aprosamine obtained by the hydrolysis of apramycin of formula II, (2) protecting the 5 and 6-position hydroxyl groups and acylating the 8'-position hydroxyl group of the product to obtain the compound of formula III, (3) subjecting the compound to intramolecular condensation reaction between the 6'-position hydroxyl group and the 7'-position amino group in the presence of a base, (4) carrying out the interchange of the 5- an 6-position protecting groups and the halogen-substitution of the 8'-position acyloxy group, (5) reacting the product with the compound of formula V, and (6) hydrolyzing the resultant compound of formula VI.
      COPYRIGHT: (C)1982,JPO&Japio
    • 新材料:式Ⅰ的异丙胺衍生物(n为0或1;波浪线表示赤道构型的轴向)及其酸加成盐。 实施例:3-氨基-2-羟丙基β-异丙酰胺。 用途:抗菌剂,杀菌剂和消毒剂。 对革兰氏阳性菌和革兰氏阴性菌具有很强的抗菌活性。 方法:式(1)通过(1)保护通过式Ⅱ的阿普霉素水解获得的异丙胺的1,3,2'和7'-位氨基,(2)保护5位和6位羟基而制备的式I化合物 并酰化产物的8'-位羟基,得到式Ⅲ化合物,(3)使化合物在6'-位羟基与7'-位氨基之间存在下进行分子内缩合反应 碱基,(4)进行5位6位保护基的互换和8位酰氧基的卤素取代,(5)使该产物与式V化合物反应,和(6 )水解所得的式VI化合物。