Method for preparing high-purity fesoterodine fumarate
    2.
    发明授权
    Method for preparing high-purity fesoterodine fumarate 有权
    制备高纯度富马酸富马酸的方法

    公开(公告)号:US09272982B2

    公开(公告)日:2016-03-01

    申请号:US14308828

    申请日:2014-06-19

    Applicant: CHEMI S.P.A.

    CPC classification number: C07C227/16 C07C59/40 C07C219/28

    Abstract: A process is described for preparing fesoterodine fumarate comprising the salification reaction of fesoterodine with fumaric acid in an organic solvent, preferably a ketone, at a temperature not greater than 45° C. Such process allows obtaining products with high yields and purities, and in particular a product having a content of (2E)-4-[(3-(3-diisopropylamino-1-phenylpropyl)-4-(2-isobutyroyloxyphenyl)methoxy]-4-oxobut-2-enoic acid less than or equal to 0.15% by mole.

    Abstract translation: 描述了在不高于45℃的温度下,在有机溶剂(优选酮)中制备非索特罗定富马酸与富马酸的成盐反应的方法,该方法允许获得高产率和纯度的产物,特别是 具有(2E)-4 - [(3-(3-二异丙基氨基-1-苯基丙基)-4-(2-异丁酰氧基苯基)甲氧基] -4-氧代丁-2-烯酸含量小于或等于0.15的产物 %摩尔。

    Process for the purification of L-α-glycerophosphorylcholine

    公开(公告)号:US10787469B2

    公开(公告)日:2020-09-29

    申请号:US16360052

    申请日:2019-03-21

    Applicant: Chemi S.P.A.

    Abstract: A process for the purification of L-α-glycerophosphorylcholine is described, wherein L-α-glycerophosphorylcholine is crystallized from DMSO or from a mixture of DMSO with at least another solvent, preferably selected from water, alcohol, halogenated solvents, ethers, esters and/or amides. Such a process allows to obtain L-α-glycerophosphorylcholine having a purity greater than 99.5%, preferably greater than 99.7%, even more preferably greater than or equal to 99.9%. A method for determining the purity of L-α-glycerophosphorylcholine is also described, comprising the elution of L-α-glycerophosphorylcholine through an HPLC column having an amino stationary phase, and subsequent detection of L-α-glycerophosphorylcholine itself, and any impurity thereof, by means of an Evaporative Light Scattering Detector type.

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