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    • 2. 发明专利
    • CARBONYLREDUCTASE AND PRODUCTION THEREOF
    • JPS6240288A
    • 1987-02-21
    • JP17977585
    • 1985-08-14
    • SEITETSU KAGAKU CO LTD
    • YAMADA HIDEAKISHIMIZU AKIRAHATA HIROYUKI
    • C12N9/02C12R1/785C12R1/845
    • PURPOSE:To collect carbonylreductase capable of reducing carbonyl groups in the presence of reduced form of nicotinamide adenine dinucleotide phosphate (NADPH), by cultivating a microorganism, belonging to the genus Mucor, etc., and having the ability to produce the titled substance capable of giving an alcohol of S-configuration. CONSTITUTION:A microorganism, belonging to the genus Mucor or Phizopus, e.g. Mucor rouxianus or Rhizopus oryzae, and having the ability to produce carbonylreductase is cultivated in a nurient culture medium by the spinner culture method with aeration to give microbial cells from the resultant culture fluid, and the carboylreductase is extracted from the interior of the microbial cells. The resultant carbonylreductase is capable of reducing carbonyl groups which are constituent units of conjugated polyketones in the presence of reduced form of nicotinamide dinucleotide phosphate (NADPH) to produce 1mol each alcohol of S-configuration and nicotinamide adenine dinucleotide phosphate (NADP ) from 1mol each carbonyl groups and NADPH. The optimum pH is 6-7, and the molecular weight measured by the gel filtration method is 54,000+ or -2,000.
    • 7. 发明专利
    • Preparation of alpha-keto acid and/or its salt
    • 阿尔卡特酸和/或其盐的制备
    • JPS59164749A
    • 1984-09-17
    • JP3970183
    • 1983-03-09
    • Seitetsu Kagaku Co Ltd
    • KAWAMURA MASAOAKUTSU SEIICHITAKAHASHI MASAHIDEHATA HIROYUKIMORISHITA TSUYOSHINISHIMORI HIROKUNI
    • C07C59/185C07C51/00C07C51/09C07C51/373C07C59/205C07C59/21C07C59/76C07C67/00
    • PURPOSE: To prepare the titled compound useful industrially as pharmaceuticals, etc., economically, in high yield, by reacting an aldehyde with an oxalic acid ester in the presence of a metal alcoholate, and hydrolyzing the product with an alkali.
      CONSTITUTION: The objective compound of formula II is prepared by reacting the aldehyde of formula I (R
      1 and R
      2 are 1W18C alkyl, halogen-substituted alkyl, 3W8C cycloalkyl, or aromatic hydrocarbon group) with an oxalic acid ester of formula (COOR
      3 )
      2 (R
      3 is 1W5C alkyl) in the presence of a metal alcoholate of formula ROM (R is 1W18C alkyl; M is alkali metal or alkaline earth metal), preferably in a solvent such as methyl alcohol, dioxane, etc. at -70W +50°C, preferably at 8W12°C, hydrolyzing the reaction mixture with an alkali such as sodium hydroxide, and treating the product with a mineral acid. The molar ratio of the compound of formula I to the oxalic acid ester preferably 1.0W1.2.
      COPYRIGHT: (C)1984,JPO&Japio
    • 目的:在金属醇化物的存在下,通过使醛与草酸酯反应,并以碱的方式使产物水解,从经济上高效率地制备作为药物等在工业上有用的标题化合物。 结构式:式II的目的化合物是通过使式I的醛(R1和R2是1-18C烷基,卤素取代的烷基,3-8C环烷基或芳族烃基)与式(III)的草酸酯反应制备的, COOR3)2(R3为1-5C烷基)在式ROM的金属醇化物(R为1-18C烷基; M为碱金属或碱土金属)的存在下,优选在溶剂如甲醇,二恶烷, 在-70- + 50℃,优选在8-12℃,用碱如氢氧化钠水解反应混合物,并用无机酸处理该产物。 式I化合物与草酸酯的摩尔比优选为1.0-1.2。