Chromatographic separation of enantiomers of bicyclic lactams
    1.
    发明授权
    Chromatographic separation of enantiomers of bicyclic lactams 失效
    双环内酰胺对映异构体的色谱分离

    公开(公告)号:US06656902B2

    公开(公告)日:2003-12-02

    申请号:US09741867

    申请日:2000-12-22

    IPC分类号: B01D1508

    CPC分类号: C07D209/52 Y02P20/55

    摘要: A method for separation of enantiomers of a lactam represented by formula (I): where n and m are each, independently, 0, 1, 2, or 3; P is H or an N-protecting group; and the dotted line represents an optional double bond, by liquid chromatographing the mixture on a chiral stationary phase, where said stationary phase is derivitized with at least one sugar derivative, with an eluent which comprises acetonitrile.

    摘要翻译: 一种分离由式(I)表示的内酰胺的对映异构体的方法:其中n和m各自独立地为0,1,2或3; P为H或N-保护基; 并且虚线表示任选的双键,通过在手性固定相上液相色谱法,其中所述固定相用至少一种糖衍生物衍生,其中包含乙腈的洗脱剂。

    Thread holder for a bringer rapier
    2.
    发明授权
    Thread holder for a bringer rapier 失效
    螺旋剑杆的螺纹支架

    公开(公告)号:US5862837A

    公开(公告)日:1999-01-26

    申请号:US732793

    申请日:1996-10-15

    IPC分类号: D03D47/23

    CPC分类号: D03D47/233

    摘要: A thread holder comprises two holding members which form a gap that has a round cross-sectional shape and increasing width. Each of the thread holders is journalled on the other holding member at at least one bearing location which is executed as a bearing surface. With this arrangement the journalled holding member can easily assume a holding position that is ideal for a thread being used. The thread holder is suitable in particular for a bringer rapier of a rapier weaving machine.

    摘要翻译: 螺纹保持器包括两个保持构件,其形成具有圆形横截面形状和增加宽度的间隙。 每个螺纹保持器在作为承载面执行的至少一个轴承位置上轴颈安装在另一保持构件上。 通过这种布置,支承的保持构件可以容易地呈现对于所使用的线程是理想的保持位置。 螺纹固定器特别适用于剑杆织机的扶手剑杆。