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    Method of producing optically active cyclopropane derivatives
    4.
    发明授权
    Method of producing optically active cyclopropane derivatives 失效
    光学活性环丙烷衍生物的制备方法

    公开(公告)号：US5900492A

    公开(公告)日：1999-05-04

    申请号：US982458

    申请日：1997-12-02

    申请人： Katsutoshi Sakata ,  Takashi Tsuji ,  Noriyasu Kataoka ,  Masanobu Yatagai

    发明人： Katsutoshi Sakata ,  Takashi Tsuji ,  Noriyasu Kataoka ,  Masanobu Yatagai

    IPC分类号： C07C69/757 ,  C07C211/27 ,  C07D307/93 ,  C07D307/00

    CPC分类号： C07C69/757 ,  C07C211/27 ,  C07D307/93

    摘要： A method for resolving optically impure 3-oxa-2-oxobicyclo�3.1.0!hexane-1-carboxylic acid esters. A method is provided for producing a 1-alkoxycarbonyl-2-hydroxymethylcyclopropane-1-carboxylic acid.N-benzyl-.alpha.-phenylethylamine diastereomer salt. An enantiomer of N-benzyl-.alpha.-phenylethylamine is reacted with a 1-alkoxycarbonyl-2-hydroxymethylcyclopropane-1-carboxylic acid to produce a precipitate that is enriched in one diastereomer of the salt. After isolating the optically active salt, the N-benzyl-.alpha.-phenylethylamine may be separated to produce the corresponding 1-alkoxycarbonyl-2-hydroxymethylcyclopropane-1-carboxylic acid. Under acidic conditions, the carboxylic acid and hydroxyl groups undergo ring closure to afford the optically active 3-oxa-2-oxobicyclo�3.1.0!hexane-1-carboxylic acid ester.

    摘要翻译： 一种拆分光学上不纯的3-氧杂-2-氧代双环[3.1.0]己烷-1-羧酸酯的方法。 提供了制备1-烷氧基羰基-2-羟甲基环丙烷-1-羧酸N-苄基-α-苯乙胺非对映体盐的方法。 N-苄基-α-苯乙基胺的对映异构体与1-烷氧基羰基-2-羟甲基环丙烷-1-羧酸反应，产生富含一种盐的非对映异构体的沉淀物。 分离光学活性盐后，可以分离N-苄基-α-苯乙胺，生成相应的1-烷氧基羰基-2-羟甲基环丙烷-1-羧酸。 在酸性条件下，羧酸和羟基发生闭环，得到光学活性3-氧杂-2-氧代双环[3.1.0]己烷-1-羧酸酯。

    Steering gear box mounting structure
    5.
    发明授权
    Steering gear box mounting structure 有权
    转向齿轮箱安装结构

    公开(公告)号：US6164405A

    公开(公告)日：2000-12-26

    申请号：US190611

    申请日：1998-11-12

    申请人： Katsutoshi Sakata

    发明人： Katsutoshi Sakata

    IPC分类号： B60G3/24 ,  B62D3/12 ,  B62D7/22 ,  F16F1/387 ,  F16F1/393 ,  B62D3/00

    CPC分类号： B62D7/22 ,  B60G3/24 ,  B62D3/12 ,  F16F1/387 ,  F16F1/3935

    摘要： A steering gear box mounting structure has a flexible support device for mounting a steering gear box to a vehicle body member and a flexible support device mounting portion for mounting the flexible support device to the steering gear box. The flexible support device is composed of an outer sleeve, an inner sleeve and an elastic body. The outer sleeve is conically shaped in its both axial end portions and is cylindrically shaped in its center portion. The inner sleeve is partially conically shaped in its axial end portions and is cylindrically shaped in its center portion. The elastic body is interposed between the outer and inner sleeves with a hollow space left therebetween. In the flexible support device, the outer sleeve is provided with an inclined surface inclined with respect to a direction perpendicular to the axis of the outer sleeve. Hence, the outer sleeve is vertically displaced relative to the inner sleeve in accordance with loads applied to the vehicle in left-to-right directions, thus making it possible to obtain a variable toe curve. The hollow space ensures a certain linear range.

    摘要翻译： 转向齿轮箱安装结构具有用于将转向齿轮箱安装到车身部件的柔性支撑装置和用于将柔性支撑装置安装到转向齿轮箱的柔性支撑装置安装部分。 柔性支撑装置由外套筒，内套筒和弹性体构成。 外套筒在其两个轴向端部具有圆锥形状，并且在其中心部分呈圆柱形。 内套筒的轴向端部为圆锥形，中心部为圆筒状。 弹性体插入在外套筒和内套筒之间，其间留有中空空间。 在柔性支撑装置中，外套筒具有相对于垂直于外套筒的轴线的方向倾斜的倾斜表面。 因此，根据在左右方向上施加到车辆的载荷，外套筒相对于内套筒垂直移位，从而可以获得可变的脚趾曲线。 空心空间确保一定的线性范围。