Method of producing hyaluronic acid
    2.
    发明授权
    Method of producing hyaluronic acid 失效
    生产透明质酸的方法

    公开(公告)号:US4885244A

    公开(公告)日:1989-12-05

    申请号:US104219

    申请日:1987-10-05

    摘要: High molecular weight hyaluronic acid can be efficiently produced by incorporating one or more compounds having at least one aromatic ring to which one or more hydroxyl groups are attached into a medium for producing hyaluronic acid by a bacterium capable of producing hyaluronic acid. By using this method, a sufficient amount of hyaluronic acid can be easily obtained without decomposing the high molecular structure of hyaluronic acid so that the process for isolating and purifying hyaluronic acid from the medium can be simplified.

    摘要翻译: 高分子量透明质酸可以通过将一种或多种具有至少一个芳环的化合物(其中一个或多个羟基被连接到用于产生透明质酸的细菌的培养基中)而被能够产生透明质酸的细菌产生。 通过使用该方法,可以容易地获得足够量的透明质酸,而不会分解透明质酸的高分子结构,从而可以简化从培养基中分离和纯化透明质酸的方法。

    Preparation of immobilized enzymes of microorganisms
    3.
    发明授权
    Preparation of immobilized enzymes of microorganisms 失效
    微生物固定化酶的制备

    公开(公告)号:US4276381A

    公开(公告)日:1981-06-30

    申请号:US60907

    申请日:1979-07-26

    CPC分类号: C12P19/14 C12N1/04 C12N11/04

    摘要: Immobilized enzymes or microorganisms are prepared by dispersing lumps of ice containing an enzyme or microorganism in an organic solvent having a water-insoluble high-molecular weight substance dissolved therein, and then removing the organic solvent to entrap the ice lumps in the water-insoluble high-molecular weight substance. Deactivation of the enzyme or microorganism by the organic solvent is prevented by the enzyme or microorganism being entrapped in the lumps of ice.

    摘要翻译: 固定的酶或微生物通过将含有酶或微生物的冰块块溶解在其中溶解有不溶于水的高分子量物质的有机溶剂中而制备,然后除去有机溶剂以将冰块截留在不溶于水的高温 分子量物质。 通过酶或微生物被捕获在冰块中来防止酶或微生物被有机溶剂的失活。

    Process for preparing optically active carboxylic acids and antipode
esters thereof
    4.
    发明授权
    Process for preparing optically active carboxylic acids and antipode esters thereof 失效
    光学活性羧酸及其对映体酯的制备方法

    公开(公告)号:US4629701A

    公开(公告)日:1986-12-16

    申请号:US627093

    申请日:1984-07-02

    IPC分类号: C12P11/00 C12P41/00

    CPC分类号: C12P41/00 C12P11/00

    摘要: Organic carboxylic acid ester represented by the formula (II): ##STR1## wherein R.sub.1 is an alkyl, an aralkyl or an aryl group; R.sub.2 is an alkyl group; R.sub.3 is an alkyl group; n is 1 or 2, are synthesized in racemic form, and then the acid ester (II) is treated with a source containing enzyme capable of rearranging with or without asymmetrically hydrolyzing ester bond until either a d-form or 1-form optically active carboxylic acid ester represented by the formula (II) with or without the antipode acid thereof is produced.

    摘要翻译: 由式(II)表示的有机羧酸酯:其中R 1是烷基,芳烷基或芳基; R2是烷基; R3是烷基; n为1或2,以外消旋形式合成,然后用含有酶的酶处理酸酯(II),其能够或不具有不对称水解的酯键重排,直到d型或1-型光学活性羧基 制备了具有或不具有对映体酸的由式(II)表示的酸酯。

    Optically active .alpha.-substituted carboxylic acid derivatives and
method for producing the same
    5.
    发明授权
    Optically active .alpha.-substituted carboxylic acid derivatives and method for producing the same 失效
    光学活性α-取代羧酸衍生物及其制备方法

    公开(公告)号:US5773240A

    公开(公告)日:1998-06-30

    申请号:US750761

    申请日:1996-12-12

    摘要: The present invention relates to an optically active .alpha.-substituted carboxylic acid derivative represented by the general formula (I): ##STR1## (wherein R.sub.1 is a hydroxyl group, ##STR2## R.sub.2 is a methyl group or a chlorine atom; R.sub.3 is a hydrogen atom or an alkyl group with 1-6 carbon atoms; n is an integer of 1 or 2; and * represents an asymmetric carbon atom, provided that R.sub.2 is a chlorine atom when R.sub.1 is a hydroxyl group); and a method for producing the optically active .alpha.-substituted carboxylic acid derivative represented by the general formula (I) and antipodes thereof using a culture, cells or a material obtainable from cells of a microorganism having an ability to asymmetrically hydrolyze ester bonds. The optically active .alpha.-substituted carboxylic acid derivatives and antipodes thereof provided by the invention are useful as raw materials for various liquid crystals and as synthetic intermediates for various optically active medicines or agricultural chemicals.

    摘要翻译: PCT No.PCT / JP95 / 01176 Sec。 371日期:1996年12月12日 102(e)日期1996年12月12日PCT提交1995年6月13日PCT公布。 第WO95 / 34525号公报 日期:1995年12月21日本发明涉及由通式(I)表示的光学活性α-取代羧酸衍生物:其中R1是羟基,R2是甲基 或氯原子; R3是氢原子或具有1-6个碳原子的烷基; n是1或2的整数; *表示不对称碳原子,条件是当R1是羟基时R2是氯原子 组); 以及使用可以从具有不对称水解酯键的能力的微生物的细胞获得的培养物,细胞或材料制备由通式(I)表示的光学活性α-取代羧酸衍生物及其对映体的方法。 本发明提供的光学活性的α-取代羧酸衍生物及其对映体可用作各种液晶的原料,也可用作各种光学活性药物或农用化学品的合成中间体。

    Process for producing D-lactic acid and L-lactamide
    7.
    发明授权
    Process for producing D-lactic acid and L-lactamide 失效
    D-乳酸和L-乳酰胺的制备方法

    公开(公告)号:US5597716A

    公开(公告)日:1997-01-28

    申请号:US340996

    申请日:1994-11-17

    IPC分类号: C12P7/56 C12P41/00 C12P13/02

    摘要: The present invention relates to a process for producing D-lactic acid and L-lactamide, comprising allowing a culture broth of a microorganism capable of asymmetric hydrolysis of DL-lactamide belonging to the genus Alcaligenes, Pseudomonas, Agrobacterium, Brevibacterium, Acinetobacter, Corynebacterium, Enterobacter, Micrococcus or Rhodococcus, the microorganism itself, a material obtained therefrom or an immobilized material thereof to act on DL-lactamide, and recovering the resulting D-lactic acid and the remaining L-lactamide. The present invention enables sufficient production of D-lactic acid and L-lactamide by the present microorganism.

    摘要翻译: 本发明涉及D-乳酸和L-乳酰胺的制造方法,其特征在于,含有能够产生属于产碱杆菌属,假单胞菌属,农杆菌属,短杆菌属,不动杆菌属,棒状杆菌属, 肠杆菌属,微球菌属或红球菌属,微生物本身,由其获得的材料或其固定化材料作用于DL-乳酰胺,并回收得到的D-乳酸和剩余的L-乳酰胺。 本发明能够通过本发明的微生物充分生产D-乳酸和L-乳酰胺。

    Process for the preparation of l-proline derivatives
    10.
    发明授权
    Process for the preparation of l-proline derivatives 失效
    制备脯氨酸衍生物的方法

    公开(公告)号:US5473081A

    公开(公告)日:1995-12-05

    申请号:US181168

    申请日:1994-01-13

    IPC分类号: C07D207/16 C07D207/12

    CPC分类号: C07D207/16

    摘要: An L-proline derivative represented by: ##STR1## wherein R.sub.2 represents a lower alkyl group is prepared by reacting L-proline with a D-.alpha.-alkyl-.beta.-acylthiopropionic acid halide, ##STR2## wherein R.sub.1 represents an acyl group, X represents a halogen atom and R.sub.2 has the same meaning as defined above. The halide is added to an aqueous medium containing L-proline and a condensation agent for deacidification. The halide and L-proline are reacted while the reaction temperature and pH are maintained at 12.degree. C. or lower and within a range of 10.5-11.5, whereby a compound represented by: ##STR3## wherein R.sub.1 and R.sub.2 have the same meanings as defined above is obtained. The resulting compound is then subjected to deacylation under strong alkaline conditions without being isolated from the reaction mixture, thereby yielding the target L-proline derivative.

    摘要翻译: 由下式表示的L-脯氨酸衍生物:其中R2表示低级烷基,其通过L-脯氨酸与D-α-烷基-β-酰基硫代丙酰卤反应来制备,其中R1表示酰基,X 表示卤素原子,R2表示与上述相同的含义。 将卤化物加入到含有L-脯氨酸和用于脱酸的缩合剂的水性介质中。 使卤化物和L-脯氨酸反应,同时将反应温度和pH保持在12℃或更低并且在10.5-11.5的范围内,由此得到由下式表示的化合物:其中R1和R2具有相同的含义 获得上述定义。 然后将所得化合物在强碱性条件下进行脱酰基,而不从反应混合物中分离,从而得到目标L-脯氨酸衍生物。