Process for the purifying of iopamidol
    4.
    发明授权
    Process for the purifying of iopamidol 有权
    碘帕醇的纯化方法

    公开(公告)号:US06506938B1

    公开(公告)日:2003-01-14

    申请号:US09139894

    申请日:1998-08-25

    IPC分类号: C07C23305

    CPC分类号: C07C231/22 C07C237/46

    摘要: A process for purifying Iopamidol which uses a butanol as solvent is described. Iopamidol is obtained with high yields, also starting from aqueous solutions of the same and has characteristics in accordance with those required by pharmacopoeia.

    摘要翻译: 描述了一种纯化使用丁醇作为溶剂的Iopamidol的方法。 以高产率获得伊波帕醇,也从该溶液的水溶液开始,具有符合药典要求的特征。

    Process for the preparation of heteroaryl-phenylalanines
    5.
    发明授权
    Process for the preparation of heteroaryl-phenylalanines 有权
    制备杂芳基 - 苯丙氨酸的方法

    公开(公告)号:US06448408B1

    公开(公告)日:2002-09-10

    申请号:US09331164

    申请日:1999-06-21

    IPC分类号: C07D27730

    摘要: A process for the preparation of heteroaryl-phenylalanines of formula (II) in which R is a hydrogen atom, a straight or branched C1-C4 alkyl groups or a benzyl group; R1 is an optionally substituted 5 or 6 membered aromatic heterocyclic group with one or two heteroatoms selected among nitrogen, oxygen and sulphur; comprising a cross-coupling reaction among heteroaryl-zinc halide and phenylalanine derivatives is described. Compounds of formula (II) are intermediates useful for the preparation of compounds endowed with pharmacological activity.

    摘要翻译: 制备式(II)的杂芳基 - 苯丙氨酸的方法,其中R是氢原子,直链或支链C 1 -C 4烷基或苄基; R1是具有一个或两个选自氮,氧和硫的杂原子的任选取代的5或6元芳族杂环基; 描述了杂芳基 - 卤化锌和苯丙氨酸衍生物之间的交叉偶联反应。 式(II)化合物是可用于制备具有药理活性的化合物的中间体。

    Process for the preparation of an intermediate useful in the synthesis
of iodinated contrast media
    8.
    发明授权
    Process for the preparation of an intermediate useful in the synthesis of iodinated contrast media 失效
    用于制备可用于合成碘化造影剂的中间体的方法

    公开(公告)号:US6100425A

    公开(公告)日:2000-08-08

    申请号:US995153

    申请日:1997-12-19

    IPC分类号: C07C231/02 C07C67/02

    CPC分类号: C07C231/02

    摘要: A process for the preparation of the compound L-5-(2-acetoxypropionylamino)-2,4,6-triiodoisophthaloyl dichloride by reacting 5-amino-2,4,6-triiodoisophthaloyl dichloride with L-2-acetoxypropionyl chloride in N,N-dimethylacetamide as a solvent, characterized in that a catalytic amount of a lower alcohol is added to the reaction mixture.

    摘要翻译: 通过使5-氨基-2,4,6-三碘邻苯二甲酰氯与N-1中的L-2-乙酰氧基丙酰氯反应制备化合物L-5-(2-乙酰氧基丙酰基氨基)-2,4,6-三碘间苯二酰氯的方法, N-二甲基乙酰胺作为溶剂,其特征在于向反应混合物中加入催化量的低级醇。