Method of synthesis of retinoic acid
    9.
    发明授权
    Method of synthesis of retinoic acid 失效
    视黄酸合成方法

    公开(公告)号:US5808120A

    公开(公告)日:1998-09-15

    申请号:US517931

    申请日:1995-08-22

    IPC分类号: C07C403/20 C11C3/00

    摘要: A method of synthesizing 9-cis-retinoic acid, all-trans-retinoic acid or 9-nor-retinoic acid is disclosed. The method comprises the steps of adding a Grignard reagent of ##STR1## to 2,2,6 trimethyl cyclohexanone is disclosed. R is a methyl group or H and the CH.sub.2 --OH group is in either the cis or trans orientation relative to the HC.tbd.C- group. The resulting product is converted into retinoic acid. In the preferable form of the present invention, a tritium-labelled retinoic acid is synthesized, wherein the labelling is at the C.sub.20 position. A preparation of tritium-labelled 9-cis-retinoic acid with a specific activity of greater than 65 Ci/mmol is also enclosed. In a most preferred embodiment, the specific activity is greater than 75 Ci/mmol.

    摘要翻译: 公开了9-顺式 - 视黄酸,全反式维甲酸或9-去甲维维酸的合成方法。 该方法包括以下步骤:向2,2,6三甲基环己酮中加入“IMAGE”格氏试剂。 R是甲基或H,并且CH 2 -OH基团相对于HC 3BOND C基团是顺式或反式取向。 将所得产物转化为视黄酸。 在本发明的优选形式中,合成氚标记的视黄酸,其中标记为C20位。 还封闭了具有大于65Ci / mmol比活性的氚标记的9-顺式 - 视黄酸的制备。 在最优选的实施方案中,比活性大于75Ci / mmol。