Process for the production of monoamides of DTPA
    91.
    发明授权
    Process for the production of monoamides of DTPA 失效
    生产DTPA单酰胺的方法

    公开(公告)号:US06677483B2

    公开(公告)日:2004-01-13

    申请号:US10056044

    申请日:2002-01-28

    IPC分类号: C07C22900

    CPC分类号: C07C231/02 C07C237/04

    摘要: A new process for the preparation of diethylenetriaminepentaacetic-monoamides in which amines can be reacted with sensitive groups, a higher mono/diamide selectivity is achieved, a higher yield of monoamide is achieved and has a simple reaction scheme and working-up.

    摘要翻译: 制备二胺三胺五乙酸单酰胺的新方法,其中胺可以与敏感基团反应,获得更高的单/二酰胺选择性,实现了更高的单酰胺产率,并且具有简单的反应方案和后处理。

    Preparation of high-purity gadobutrol

    公开(公告)号:US10072027B2

    公开(公告)日:2018-09-11

    申请号:US14112994

    申请日:2012-04-17

    IPC分类号: C07F5/00 A61K49/10 C07D257/02

    摘要: What is described is a process for producing high-purity gadobutrol in a purity (according to HPLC) of more than 99.7 or 99.8 or 99.9% and the use for preparing a pharmaceutical formulation for parenteral administration. The process is carried out using specifically controlled crystallization conditions. The more recent developments in the field of the gadolinium-containing MR contrast agents (EP 0448191 B1, CA Patent 1341176, EP 0643705 B1, EP 0986548 B1, EP 0596586 B1) include the MRT contrast agent gadobutrol (Gadovist® 1.0) which has been approved for a relatively long time in Europe and more recently also in the USA under the name Gadavist®.