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    • 1. 发明授权
    • Method for the preparation of citalopram
    • 西酞普兰制备方法
    • US06365747B1
    • 2002-04-02
    • US09830109
    • 2001-06-01
    • Leone Dall'AstaUmberto CasazzaHans Petersen
    • Leone Dall'AstaUmberto CasazzaHans Petersen
    • C07D30787
    • C07D307/87C07D263/14C07D413/04
    • The present invention relates to a method for the preparation of citalopram or any of its enantiomers and acid addition salts thereof comprising treatment of a compound of formula (IV), wherein X is O or S; R1-R2 are each independently selected from hydrogen and C1-6 alkyl, or R1 and R2 together form a C2-5 alkylene chain thereby forming a spiro-ring; R3 is selected from hydrogen and C1-6 alkyl, R4 is selected from hydrogen, C1-6 alkyl, a carboxy group or a precursor group therefore, or R3 and R4 together form a C2-5 alkylene chain thereby forming a spiro-ring, with a dehydration agent or alternatively where X is S, thermally cleavage of the thiazoline ring, or treatment in presence of a radical initiator, to form citalopram. The invention also relates to intermediates used in the new process for the preparation of citalopram, as well as citalopram prepared according to the new process.
    • 本发明涉及一种制备西酞普兰或其任何对映异构体及其酸加成盐的方法,包括处理式(IV)化合物,其中X为O或S; R 1 -R 2各自独立地选自氢和C 1-6烷基,或者R 1和R 2一起形成C 2-5亚烷基链,从而形成螺环; R3选自氢和C 1-6烷基,因此R4选自氢,C 1-6烷基,羧基或前体基,或者R 3和R 4一起形成C 2-5亚烷基链,从而形成螺环, 用脱水剂或者其中X是S,噻唑啉环的热裂解,或在自由基引发剂的存在下进行处理以形成西酞普兰。 本发明还涉及用于制备西酞普兰的新方法的中间体以及根据新方法制备的西酞普兰。
    • 3. 发明授权
    • Crystalline base of escitalopram and orodispersible tablets comprising escitalopram base
    • 依他普仑和包含依他普仑碱的分散片的结晶基
    • US07834201B2
    • 2010-11-16
    • US11425522
    • 2006-06-21
    • Robert DancerHans PetersenOle NielsenMichael Harold RockHelle EliasenKen Liljegren
    • Robert DancerHans PetersenOle NielsenMichael Harold RockHelle EliasenKen Liljegren
    • C07D307/87
    • C07D307/81
    • The present invention relates to the crystalline base of the well known antidepressant drug escitalopram, S-1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzofurancarbonitrile, formulations of said base, a process for the preparation of purified salts of escitalopram, such as the oxalate, using the base, the salts obtained by said process and formulations containing such salts, and a process for the preparation of purified escitalopram free base or salts of escitalopram, such as the oxalate, using the hydrobromide, the salts obtained by said process and formulations containing such salts. Finally the present invention relates to an orodispersible tablet having a hardness of at least 22 N and an oral-disintegration time of less than 120 s and comprising an active pharmaceutical ingredient adsorbed onto a water soluble filler wherein the active pharmaceutical ingredient has a melting point in the range of 40-100° C., as well as a method for making such an orodispersible tablet.
    • 本发明涉及众所周知的抗抑郁药物依他普仑S-1- [3-(二甲基氨基)丙基] -1-(4-氟苯基)-1,3-二氢-5-异苯并呋喃甲腈的结晶碱,所述制剂为 碱,使用碱,草酸盐的纯化盐的制备方法,通过所述方法获得的盐和含有这些盐的制剂的方法,以及制备纯化的依他普仑游离碱或依他普仑的盐的方法, 例如草酸盐,使用氢溴酸盐,通过所述方法获得的盐和含有这些盐的制剂。 最后,本发明涉及硬度至少为22N,口服崩解时间小于120秒的可分散片剂,其包含吸附在水溶性填料上的活性药物成分,其中活性药物成分的熔点为 40-100℃的范围,以及制造这种可分散片剂的方法。