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    Optically active esters of 7-substituted 3,5-difunctionalized 6-heptenoic acids
    2.
    发明授权
    Optically active esters of 7-substituted 3,5-difunctionalized 6-heptenoic acids 失效
    7-取代的3,5-二官能化的6-庚烯酸的光学活性酯

    公开(公告)号：US5276154A

    公开(公告)日：1994-01-04

    申请号：US748076

    申请日：1991-08-21

    申请人： Tamejiro Hiyama ,  Tatsuya Minami ,  Takeshi Hanamoto ,  Guntoori B. Reddy

    发明人： Tamejiro Hiyama ,  Tatsuya Minami ,  Takeshi Hanamoto ,  Guntoori B. Reddy

    IPC分类号： C07C67/343 ,  C07C69/732 ,  C07C69/738 ,  C07D209/10 ,  C07D309/30 ,  C07D215/14 ,  C07D215/233

    CPC分类号： C07C69/738 ,  C07C67/343 ,  C07C69/732

    摘要： The present invention provides optically active esters of 7-substituted 3,5-difunctionalized 6-heptenoic acids represented by the following formula: ##STR1## wherein R is a substituted or unsubstituted aromatic group, a substituted or unsubstituted heteroaromatic group or a substituted vinyl group;Ar is a condensed aromatic group;X.sup.1 and Y.sup.1 are not the same and each is a hydrogen atom or a hydroxyl group, or may be combined to represent an oxygen atom which forms a carbonyl group together with the carbon atom to which X.sup.1 and Y.sup.1 are attached; andX.sup.2 and Y.sup.2 are not the same and each is a hydrogen atom or a hydroxyl group, or may be combined to represent an oxygen atom which forms a carbonyl group together with the carbon atom to which X.sup.2 and Y.sup.2 are attached,or enantiomers thereof.The present invention further provides processes for preparing the above optically active esters and 7-substituted (3R, 5S, 6E)-3,5-dihydroxy-6-hepten-1,5-olides.These esters are useful as synthetic intermediates for preparing the above lactones having an inhibitory activity of HMG-CoA reductase as well as a sex attractant pheromone of beetles, endo-1,3-dimethyl-2,9-dioxabicyclo[3.3.1]nonane.

    摘要翻译： 本发明提供由下式表示的7-取代的3,5-二官能的6-庚烯酸的光学活性酯：（*化学结构*）其中R是取代或未取代的芳族基团，取代或未取代的杂芳族基团或 取代乙烯基; Ar是稠合芳族基团; X1和Y1不相同，各自为氢原子或羟基，或者可以组合形成与X1和Y1所连接的碳原子一起形成羰基的氧原子; X2和Y2不相同，各自为氢原子或羟基，或者可以与X2和Y2所连接的碳原子一起形成羰基的氧原子或其对映异构体。 本发明还提供了制备上述光学活性酯和7-取代的（3R，5S，6E）-3,5-二羟基-6-庚烯-1,5-二醇的方法。 这些酯可用作制备具有HMG-CoA还原酶抑制活性的上述内酯的合成中间体以及甲虫的性引诱信息素，内切1,3-二甲基-2,9-二氧杂双环（3.3.1）壬烷 。

    Spline-coupling structure
    3.
    发明授权
    Spline-coupling structure 失效
    花键耦合结构

    公开(公告)号：US5503494A

    公开(公告)日：1996-04-02

    申请号：US278218

    申请日：1994-07-21

    申请人： Akira Kamata ,  Hiroshi Moriya ,  Yuzi Ikki ,  Takeshi Hanamoto ,  Yoshiari Takagi ,  Hideo Otsuka

    发明人： Akira Kamata ,  Hiroshi Moriya ,  Yuzi Ikki ,  Takeshi Hanamoto ,  Yoshiari Takagi ,  Hideo Otsuka

    IPC分类号： F16D1/06 ,  F16D1/08 ,  F16D3/06 ,  F16H55/17

    CPC分类号： F16H57/0025 ,  F16D1/0858 ,  F16D3/06 ,  F16D2001/103 ,  Y10T403/7035

    摘要： A spline-coupling structure in which at least one of male and female members has a press-fit guide face provided at its end opposed to the other member before press-fitting of the members. The press-fit guide face includes a plurality of guide face portions smoothly interconnecting the end and bottom lands of the spline teeth of the one member to form axially outwardly expanded arcs, a plurality of second guide face portions smoothly interconnecting tooth addendums of the spline teeth and the end to form axially outwardly expanded arcs, and a plurality of third guide face portions smoothly interconnecting tooth flanks of the spline teeth and the second guide face portion to form axially outwardly expanded arcs. The first, second and third guide face portions are connected smoothly to one another. Thus, dragging between the spline teeth of both members is prevented during press-fit coupling, to maximize the function of crownings to reduce press-fitting load and provide a sufficient coupling force, and facilitate disengagement of both members from each other and allow reuse of both members.

    摘要翻译： 一种花键联接结构，其中，在构件的压配合之前，凸构件和阴构件中的至少一个具有设置在其与另一构件相对的端部处的压入引导面。 压入引导面包括多个引导面部分，其平滑地将一个部件的花键齿的端部和底部平台互连以形成轴向向外的扩展的弧形;多个第二引导面部分，其平滑地互连花键齿的齿顶 并且端部形成轴向向外扩展的弧，并且多个第三引导面部分使花键齿的齿面与第二引导面部分平滑地互连，以形成轴向向外扩展的弧。 第一，第二和第三引导面部分彼此平滑地连接。 因此，在压配合期间防止两个构件的花键齿之间的拖动，以最大限度地发挥冠部的功能，以减小压配合载荷并提供足够的联接力，并且有助于两个构件彼此分离并允许再次使用 两个成员。