Preparation of dihydropyridines
    1.
    发明授权
    Preparation of dihydropyridines 有权
    二氢吡啶的制备

    公开(公告)号:US08455655B2

    公开(公告)日:2013-06-04

    申请号:US13102101

    申请日:2011-05-06

    IPC分类号: C07D213/803

    摘要: The invention relates to a method and compounds for the preparation of clevidipine butyrate, a very short acting hypertensive calcium antagonist, as well as the synthesis of these compounds useful for the preparation of clevidipine (also known as clevidipine butyrate). Moreover the invention also discloses polymorphic forms of clevidipine butyrate, useful for the preparation of pharmaceutical compositions, and processes to prepare them.

    摘要翻译: 本发明涉及制备丁酸氯维地平(一种非常短暂的高血压钙拮抗剂)的方法和化合物,以及这些化合物的合成,这些化合物可用于制备氯维地平(也称为丁酸吡啶地平)。 此外,本发明还公开了可用于制备药物组合物的丁酸氯维地平的多晶型物及其制备方法。

    Novel Process for Preparation of Bicalutamide
    5.
    发明申请
    Novel Process for Preparation of Bicalutamide 审中-公开
    制备比卡鲁胺的新方法

    公开(公告)号:US20080177109A1

    公开(公告)日:2008-07-24

    申请号:US11574886

    申请日:2005-05-10

    IPC分类号: C07C315/02

    摘要: The present invention discloses a process for the synthesis of N-[4-Cyano-3-(trifluoromethyl)phenyl]-3-[(4-fluorophenyl)sulphonyl]-2-hydroxy-2-methyl propanamide (Form I). The invention discloses a reagent for oxidation of N-[4-Cyano-3-(trifluoromethyl)phenyl]-3-[(4-fluorophenyl)thio]-2-hydroxy-2-methyl propanamide to N-[4-Cyano-3-(trifluoromethyl)phenyl]-3-[(4-fluorophenyl)sulphonyl]-2-hydroxy-2-methyl propanamide. More particularly, the invention discloses a method of purification of N-[4-Cyano-3-(trifluoromethyl)phenyl]-3-[(4-fluorophenyl)sulphonyl]-2-hydroxy-2-methyl propanamide in a mixture of methylethyl ketone and hexane giving form (I). This form (I) is useful as an active pharmaceutical and has antiandrogenic activity.

    摘要翻译: 本发明公开了N- [4-氰基-3-(三氟甲基)苯基] -3 - [(4-氟苯基)磺酰基] -2-羟基-2-甲基丙酰胺(形式I)的合成方法。 本发明公开了一种用于将N- [4-氰基-3-(三氟甲基)苯基] -3 - [(4-氟苯基)硫] -2-羟基-2-甲基丙酰胺氧化成N- [4-氰基 - 3-(三氟甲基)苯基] -3 - [(4-氟苯基)磺酰基] -2-羟基-2-甲基丙酰胺。 更具体地说,本发明公开了一种将N- [4-氰基-3-(三氟甲基)苯基] -3 - [(4-氟苯基)磺酰基] -2-羟基-2-甲基丙酰胺在甲基乙基 酮和己烷,得到形式(I)。 该形式(I)可用作活性药物并具有抗雄激素活性。