Process for the preparation of dexmethylphenidate hydrochloride
    1.
    发明授权
    Process for the preparation of dexmethylphenidate hydrochloride 失效
    盐酸右哌甲酯制备方法

    公开(公告)号:US07247730B2

    公开(公告)日:2007-07-24

    申请号:US10793080

    申请日:2004-03-04

    IPC分类号: C07D211/22

    CPC分类号: C07D211/34

    摘要: The present invention provides a new and efficient process for the preparation of the dexmethylphenidate hydrochloride with high optical purity, the process comprising: (a) reacting a solution of threo-N-Boc-ritalinic acid with (S)-1-phenylethylamine, separating precipitated solid salt of (R,R)-enriched N-Boc-ritalinic acid with (S)-1-phenylethylamnine from the reaction mixture and recrystallizing, reslurring and/or trituring of said salt; (b) mixing the solid salt of (R,R)-N-Boc-ritalinic acid and (S)-1-phenylethylamine obtained in step (a) with aqueous acid and separating (R,R)-N-Boc-ritalinic acid from the mixture; and (c) reacting the (R,R)-N-Boc-ritalinic acid prepared in step (b) with hydrogen chloride and methanol to give dexmethylphenidate hydrochloride with optical purity of at least 99% ee. The present invention further provides salt of (R,R)-N-Boc-ritalinic acid with (S)-1-phenylethylamine as new intermediate in the preparation of dexmethylphenidate hydrochloride.

    摘要翻译: 本发明提供了一种用于制备具有高光学纯度的右哌醋酸盐酸盐的新型和有效的方法,该方法包括:(a)使苏氨酸-N-Boc-色氨酸与(S)-1-苯基乙胺的溶液,分离 (R,R)富含N-Boc-异戊酸的沉淀固体盐与(S)-1-苯乙基胺在反应混合物中的沉淀,并重结晶,再沉淀和/或研磨所述盐; (b)将步骤(a)中得到的(R,R)-N-Boc-异戊酸和(S)-1-苯基乙胺的固体盐与酸水溶液和(R,R)-N-Boc-活化后 酸从混合物中; 和(c)使步骤(b)中制备的(R,R)-N-Boc-异戊酸与氯化氢和甲醇反应,得到光学纯度为至少99%ee的盐酸偏苯甲酸酯。 本发明进一步提供(R,R)-N-Boc-异戊酸与(S)-1-苯基乙胺的盐作为制备右哌甲酯盐酸盐的新中间体。

    Methods For Purifying Trans-(-) Delta9-Tetrahydrocannabinol And Trans-(+)-Delta9-Tetrahydrocannabinol
    2.
    发明申请
    Methods For Purifying Trans-(-) Delta9-Tetrahydrocannabinol And Trans-(+)-Delta9-Tetrahydrocannabinol 有权
    用于纯化反 - ( - )Delta9-四氢大麻酚和反 - (+) - Delta9-四氢大麻酚的方法

    公开(公告)号:US20090298930A1

    公开(公告)日:2009-12-03

    申请号:US11791415

    申请日:2005-11-18

    IPC分类号: A61K31/35 C07D311/80

    摘要: Methods for making trans-(−)-Δ9-tetrahydrocannabinol and trans-(+)-Δ9-tetrahydrocannabinol are disclosed herein. In one embodiment, a trans-(−)-Δ9-tetrahydrocannabinol composition is prepared by allowing a composition comprising (±)-Δ9-tetrahydrocannabinol to separate on a chiral stationary phase to provide a trans-(−)-Δ9-tetrahydrocannabinol composition comprising at least about 99% by weight of trans-(−)-Δ9-tetrahydrocannabinol based on the total amount of trans-(−)-Δ9-tetrahydrocannabinol and trans-(+)-Δ9-tetrahydrocannabinol. The invention also relates to methods for treating or preventing a condition such as pain comprising administering to a patient in need thereof an effective amount of a trans-(−)-Δ9-tetrahydrocannabinol having a purity of at least about 98% based on the total weight of cannabinoids.

    摘要翻译: 本文公开了制备反 - ( - ) - Delta9-四氢大麻酚和反 - (+) - Delta9-四氢大麻酚的方法。 在一个实施方案中,通过使包含(±)-Delta9-四氢大麻酚的组合物在手性固定相上分离以提供反式 - ( - ) - Delta9-四氢大麻酚组合物来制备反 - ( - ) - Delta9-四氢大麻酚组合物,其包含 基于反 - ( - )-Δ9-四氢大麻酚和反 - (+)-Δ9-四氢大麻酚的总量的至少约99重量%的反式 - ( - ) - Δ9-四氢大麻酚。 本发明还涉及用于治疗或预防诸如疼痛的病症的方法,其包括向有需要的患者施用有效量的基于总计的纯度为至少约98%的反 - ( - ) - Delta9-四氢大麻酚 大麻素的重量。

    Methods for purifying trans-(−)-Δ9-tetrahydrocannabinol and trans-(+)-Δ9-tetrahydrocannabinol
    3.
    发明授权
    Methods for purifying trans-(−)-Δ9-tetrahydrocannabinol and trans-(+)-Δ9-tetrahydrocannabinol 有权
    纯化反式 - ( - ) - &Dgr; 9-四氢大麻酚和反 - (+) - &Dgr; 9-四氢大麻酚

    公开(公告)号:US08383842B2

    公开(公告)日:2013-02-26

    申请号:US11791415

    申请日:2005-11-18

    IPC分类号: C07D311/80

    摘要: Methods for making trans-(−)-Δ9-tetrahydrocannabinol and trans-(+)-Δ9-tetrahydrocannabinol are disclosed herein. In one embodiment, a trans-(−)-Δ9-tetrahydrocannabinol composition is prepared by allowing a composition comprising (±)-Δ9-tetrahydrocannabinol to separate on a chiral stationary phase to provide a trans-(−)-Δ9-tetrahydrocannabinol composition comprising at least about 99% by weight of trans-(−)-Δ9-tetrahydrocannabinol based on the total amount of trans-(−)-Δ9-tetrahydrocannabinol and trans-(+)-Δ9-tetrahydrocannabinol. The invention also relates to methods for treating or preventing a condition such as pain comprising administering to a patient in need thereof an effective amount of a trans-(−)-Δ9-tetrahydrocannabinol having a purity of at least about 98% based on the total weight of cannabinoids.

    摘要翻译: 本文公开了制备反 - ( - ) - &Dgr; 9-四氢大麻酚和反 - (+) - &Dgr; 9-四氢大麻酚的方法。 在一个实施方案中,通过使包含(±) - &Dgr; 9-四氢大麻酚的组合物在手性固定相上分离以提供反式 - ( - ) - 基于反式 - ( - ) - &Dgr; 9-四氢大麻酚和反 - (+) - &Dgr的总量,包含至少约99重量%的反 - ( - ) - &Dgr; 9-四氢大麻酚的9-四氢大麻酚组合物 ; 9-四氢大麻酚。 本发明还涉及用于治疗或预防诸如疼痛的病症的方法,包括向有需要的患者施用有效量的基于以下物质的纯 - 至少约98%的反式 - ( - ) - 吗啉-4-基 - 四氢大麻酚 大麻素的总重量。