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    Chlorohydroxyacetone derivative and process for producing optically active chloropropanediol derivative from the same
    1.
    发明授权
    Chlorohydroxyacetone derivative and process for producing optically active chloropropanediol derivative from the same 失效
    氯羟丙酮衍生物及其制备光学活性氯丙二醇衍生物的方法

    公开(公告)号：US06682916B2

    公开(公告)日：2004-01-27

    申请号：US10069105

    申请日：2002-02-26

    申请人： Naoaki Taoka ,  Hironobu Maeda ,  Kazumi Okuro ,  Koichiro Toyota ,  Yoshihiko Yasohara

    发明人： Naoaki Taoka ,  Hironobu Maeda ,  Kazumi Okuro ,  Koichiro Toyota ,  Yoshihiko Yasohara

    IPC分类号： F12P718

    CPC分类号： C12P41/002 ,  C07B2200/07 ,  C07C45/29 ,  C07C49/255 ,  C12P7/04 ,  C12P7/18 ,  C12P7/26 ,  C07C49/175

    摘要： A process for efficiently preparing an optically active chloropropanediol derivative, especially (S)-1-benzyloxy-3-chloro-2-propanol, which has a high optical purity and is useful as an intermediate for medicines. The process comprises treating an inexpensive racemic chloropropanediol derivative with a nitroxyl compound and an oxidizing agent to convert it into a chlorohydroxyacetone derivative and then stereospecifically reducing the carbonyl group of the chlorohydroxyacetone derivative by the action of either a carbonyl-reducing enzyme having the ability to stereospecifically reduce the chlorohydroxyacetone derivative or an optically treated culture of a microorganism having the ability to yield the carbonyl-reducing enzyme. Thus, an optically active chloropropanediol derivative is prepared.

    摘要翻译： 一种有效制备光学活性氯丙醇二醇衍生物，特别是（S）-1-苄氧基-3-氯-2-丙醇的方法，该方法具有高的光学纯度并且可用作药物的中间体。 该方法包括用硝酰化合物和氧化剂处理廉价的外消旋氯丙二醇衍生物，将其转化成氯羟丙酮衍生物，然后通过具有立体特异性的羰基还原酶的作用立即特异性还原氯羟基丙酮衍生物的羰基 减少氯代羟基丙酮衍生物或具有产生羰基还原酶能力的微生物的光学处理培养物。 因此，制备光学活性氯丙二醇衍生物。

    PLASTIC OPTICAL FIBER AND PLASTIC OPTICAL FIBER CODE
    3.
    发明申请
    PLASTIC OPTICAL FIBER AND PLASTIC OPTICAL FIBER CODE 有权
    塑料光纤和塑料光纤代码

    公开(公告)号：US20120020637A1

    公开(公告)日：2012-01-26

    申请号：US13260624

    申请日：2010-03-17

    申请人： Hironobu Maeda ,  Keiichi Maeshima ,  Shinji Sato ,  Yoshiyuki Kiriyama ,  Hidekazu Kunieda

    发明人： Hironobu Maeda ,  Keiichi Maeshima ,  Shinji Sato ,  Yoshiyuki Kiriyama ,  Hidekazu Kunieda

    IPC分类号： G02B6/00

    CPC分类号： C08F214/265 ,  C08F214/26 ,  G02B6/02033

    摘要： A plastic optical fiber comprising a core and a cladding, wherein the cladding comprises at least one layer, and the cladding comprises a copolymer which comprises 10 to 35% by weight of ethylene, 45 to 69% by weight of tetrafluoroethylene, 20 to 45% by weight of hexafluoropropylene, and 0.01 to 10% by weight of a fluorovinyl compound represented by Formula (1): CH2═CX1(CF2)nX2 (wherein X1 represents a fluorine atom or a hydrogen atom, X2 represents a fluorine atom, a hydrogen atom, or a hydrocarbon group, and n represents an integer from 1 to 10) as a copolymer component.

    摘要翻译： 一种包括芯和包层的塑料光纤，其中所述包层包括至少一层，并且所述包层包含共聚物，其包含10至35重量％的乙烯，45至69重量％的四氟乙烯，20至45重量％ 的六氟丙烯和0.01〜10重量％的由式（1）表示的氟乙烯基化合物：CH 2 = C X 1（CF 2）n X 2（其中，X 1表示氟原子或氢原子，X 2表示氟原子，氢 原子或烃基，n表示1〜10的整数）作为共聚物成分。

    Plastic optical fiber and plastic optical fiber code
    4.
    发明授权
    Plastic optical fiber and plastic optical fiber code 有权
    塑料光纤和塑料光纤代码

    公开(公告)号：US08503853B2

    公开(公告)日：2013-08-06

    申请号：US13260624

    申请日：2010-03-17

    申请人： Hironobu Maeda ,  Keiichi Maeshima ,  Shinji Sato ,  Yoshiyuki Kiriyama ,  Hidekazu Kunieda

    发明人： Hironobu Maeda ,  Keiichi Maeshima ,  Shinji Sato ,  Yoshiyuki Kiriyama ,  Hidekazu Kunieda

    IPC分类号： G02B6/00

    CPC分类号： C08F214/265 ,  C08F214/26 ,  G02B6/02033

    摘要： A plastic optical fiber comprising a core and a cladding, wherein the cladding comprises at least one layer, and the cladding comprises a copolymer which comprises 10 to 35% by weight of ethylene, 45 to 69% by weight of tetrafluoroethylene, 20 to 45% by weight of hexafluoropropylene, and 0.01 to 10% by weight of a fluorovinyl compound represented by Formula (1): CH2═CX1(CF2)nX2 (wherein X1 represents a fluorine atom or a hydrogen atom, X2 represents a fluorine atom, a hydrogen atom, or a hydrocarbon group, and n represents an integer from 1 to 10) as a copolymer component.

    摘要翻译： 一种包括芯和包层的塑料光纤，其中所述包层包括至少一层，并且所述包层包含共聚物，其包含10至35重量％的乙烯，45至69重量％的四氟乙烯，20至45重量％ 的六氟丙烯和0.01〜10重量％的由式（1）表示的氟乙烯基化合物：CH 2 = CX 1（CF 2）n X 2（其中，X 1表示氟原子或氢原子，X 2表示氟原子，氢 原子或烃基，n表示1〜10的整数）作为共聚物成分。