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    • 1. 发明公开
    • METHOD FOR PRODUCING OPTICALLY ACTIVE BICYCLIC UREA COMPOUND
    • VERFAHREN ZUR HERSTELLUNG EINER OPTISCH AKTIVEN BICYCLISCHEN HARNSTOFFVERBINDUNG
    • EP2915805A1
    • 2015-09-09
    • EP13850807.2
    • 2013-10-25
    • Kaneka Corporation
    • HIRAI, YoshinoriNISHIYAMA, Akira
    • C07D211/60C07D471/08C07D487/08C07B53/00C07B61/00
    • C07D211/98C07B53/00C07D211/60C07D471/08C07D471/18C07D487/08
    • A problem to be solved by the present invention is to provide a process for producing an optically active bicyclic urea compound useful as an intermediate for β-lactamase inhibitor, in a simple and easy manner with high efficiency.
      The present invention includes reacting a specific ester compound with a specific amine in the presence of a metal alkoxide and/or an alkaline earth metal salt to produce the corresponding amide compound, which is then reacted with phosgene or a phosgene equivalent, followed by, if necessary, treatment with an acid or a base, to produce an optically active bicyclic urea compound. This makes it possible to produce an optically active bicyclic urea compound in a simple and easy manner with high efficiency and in high optical purity, without using expensive reagents such as catalysts and condensation agents, and without passing through protection and deprotection steps.
    • 本发明要解决的问题是提供以简单且容易的方式高效率地生产用作β-内酰胺酶抑制剂的中间体的光学双环脲化合物的方法。 本发明包括在金属醇盐和/或碱土金属盐的存在下使特定的酯化合物与特定的胺反应以产生相应的酰胺化合物,然后与光气或光气当量反应,然后如果 必要时用酸或碱处理,以产生光学双环脲化合物。 这使得可以以简单和容易的方式以高效率和高光学纯度生产光学活性双环脲化合物,而不使用昂贵的试剂如催化剂和缩合剂,并且不经过保护和脱保护步骤。
    • 8. 发明公开
    • PROCESS FOR PRODUCTION OF N-ALKOXYCARBONYL-tert-LEUCINES
    • VERFAHREN ZUR HERSTELLUNG VON N-ALKOXYCARBONYL-TERT.-LEUCINEN
    • EP2423187A1
    • 2012-02-29
    • EP09843676.9
    • 2009-07-13
    • Kaneka Corporation
    • KAWASAKI, HiroakiMOROSHIMA, TadashiMAEHARA, KatsujiHIRAI, Yoshinori
    • C07C269/04C07C271/12
    • C07C269/04C07C271/22
    • A high quality N-alcoxycarbonyl-tert leucine can be efficiently and stably produced with an easy procedure by reacting tert-leucine with an N-alcoxycarbonylating agent in the presence of water, wherein the use amount of the N-alcoxycarbonylating agent is not less than 0.90 times by mole and not more than 1.00 times by mole relative to the tert-leucine, with maintaining the pH of the reaction mixture in the range of not less than 9 and not more than 13 using a basic agent. In addition, an N-alcoxycarbonyl-tert-leucine can be efficiently extracted from the basic aqueous solution thereof under a mild condition using a water-immiscible solvent by mixing a hydroxide. Furthermore, the two crystal forms of N-butoxycarbonyl-tert-leucine can be controlled by adjusting the water amount in crystallization step, and the compound can be stably produced in an industrial production.
    • 通过在水存在下使叔亮氨酸与N-烷氧羰基化剂反应,可以通过简单的方法有效稳定地制备高质量的N-烷氧羰基 - 叔亮氨酸,其中N-烷氧基羰基化剂的用量不小于 使用碱性试剂将反应混合物的pH保持在不小于9且不大于13的范围内,相对于叔亮氨酸为0.90倍摩尔,不大于1.00倍摩尔。 此外,通过混合氢氧化物,可以在温和条件下使用水不混溶溶剂从其碱性水溶液中有效地提取N-烷氧基羰基 - 叔亮氨酸。 此外,可以通过调节结晶步骤中的水量来控制N-丁氧基羰基 - 叔 - 亮氨酸的两种晶体形式,并且可以在工业生产中稳定地生产化合物。