Novel method for determining cholinesterase activity
    3.
    发明授权
    Novel method for determining cholinesterase activity 失效
    确定胆碱酯酶活性的新方法

    公开(公告)号:US4717659A

    公开(公告)日:1988-01-05

    申请号:US731069

    申请日:1985-05-06

    IPC分类号: C12Q1/46

    CPC分类号: C12Q1/46 C12Q2334/00

    摘要: In a method for determining cholinesterase (hereinafter referred to as ChE) activity, the improvement comprising by using, as a substrate, a protocatechuoylcholine derivative represented by the general formula (I), ##STR1## (wherein X is a halogen atom). The method for determining ChE activity according to the present invention is free from defects of the conventional methods, has many advantages and characteristics, permits accurate and simple determination of ChE activity, and can sufficiently contribute to determination of ChE activity in daily clinical examinations.

    摘要翻译: 在用于测定胆碱酯酶(以下称为ChE)活性的方法中,所述改进包括通过使用由通式(I)表示的原儿茶酸酰胆碱衍生物,其中X为卤素原子作为底物。 根据本发明的确定ChE活性的方法没有常规方法的缺点,具有许多优点和特征,允许准确和简单地测定ChE活性,并且可以有效地确定日常临床检查中的ChE活性。

    L-argininal acetal derivatives and a process for production thereof
    9.
    发明授权
    L-argininal acetal derivatives and a process for production thereof 失效
    L-精氨酸缩醛衍生物及其制备方法

    公开(公告)号:US5416238A

    公开(公告)日:1995-05-16

    申请号:US755527

    申请日:1991-09-05

    摘要: Novel N.sup.G -protected or unprotected-L-argininal-dibutyl acetals (I) can be prepared from L-argininal derivatives (III) merely by reacting in an azeotropic solvent in the presence of p-toluenesulfonic acid. In the products (I), L-form amounts to more than 99%, without further optical resolution. The L-argininal acetals (I) are useful as starting materials for preparing peptidyl-L-argininal derivatives which can provide protease inhibitors or ligands used for affinity chromatography of various proteases.

    摘要翻译: 只有通过在对甲苯磺酸存在下在共沸溶剂中反应,可以由L-精氨酸衍生物(III)制备新的NG-保护的或未受保护的L-精氨酸 - 二丁基缩醛(I)。 在产品(I)中,L型大于99%,无需进一步的光学拆分。 L-精氨酸缩醛(I)可用作制备肽基-L-精氨酸衍生物的起始原料,其可以提供蛋白酶抑制剂或用于各种蛋白酶亲和层析的配体。