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    • 2. 发明申请
    • A NOVEL PROCESS FOR THE PREPARATION OF ESOMEPRAZOLE AND SALTS THEREOF
    • 用于制备异喹诺酮和其盐的新方法
    • WO2007140608A1
    • 2007-12-13
    • PCT/CA2007/001005
    • 2007-06-08
    • APOTEX PHARMACHEM INC.WANG, FanMONTEMAYOR, Laura, KayeCHE, DaqingHORNE, Stephen, E.
    • WANG, FanMONTEMAYOR, Laura, KayeCHE, DaqingHORNE, Stephen, E.
    • C07D401/12
    • C07D401/12Y02P20/55
    • A novel process for the preparation of omeprazole and its enantiomers, such as esomeprazole, as well as the preparation of related 2-(2-pyridinylmethyl-sulphinyl)-1H-benzimidazoles, including pantoprazole, lansoprazole and rabeprazole, as recemates or single enantiomers, and their alkali or alkaline salts has been developed. The novel process involves the surprising discovery that protection of the free-base benzimidazole sulfoxide (e.g. omeprazole or esomeprazole), by reaction with an alkyl, aryl or aralkyl chloroformate following oxidation of the corresponding sulfide, eliminates the need for its direct isolation. Subsequent removal of the protecting group with a solution of alkali or alkaline earth alkoxide in a C1-C4 alcohol directly provides the corresponding salt. By eliminating the need to handle the free-base benzimidazole sulfoxide, this advantageous procedure provides increased chemical yields over processes described in the art.
    • 一种用于制备奥美拉唑及其对映异构体的新方法,例如艾美拉唑,以及相关的2-(2-吡啶基甲基 - 亚磺酰基)-1H-苯并咪唑(包括泮托拉唑,兰索拉唑和雷贝拉唑)作为受体或单一对映异构体的制备, 并开发了它们的碱金属盐或碱金属盐。 该新方法涉及令人惊奇的发现:在相应的硫化物氧化后,通过与烷基,芳基或氯甲酸烷基酯反应来保护游离碱性苯并咪唑亚砜(例如奥美拉唑或埃索美拉唑)消除了对其直接分离的需要。 随后用碱金属或碱土金属醇溶液在C1-C4醇中除去保护基团直接提供相应的盐。 通过消除处理游离碱性苯并咪唑亚砜的需要,与本领域中描述的方法相比,该有利的方法提供了增加的化学产率。
    • 3. 发明申请
    • AN IMPROVED PROCESS FOR THE PREPARATION OF ATORVASTATIN AND INTERMEDIATES
    • 改进ATORVASTATIN和中间体的制备方法
    • WO2006089401A1
    • 2006-08-31
    • PCT/CA2006/000243
    • 2006-02-21
    • APOTEX PHARMACHEM INC.WANG, FanCHE, DaqingGUNTOORI, Bhaskar ReddyZHAO, YajunKINSMAN, Aaron, C.FAUGHT, JodyCHOW, Alan
    • WANG, FanCHE, DaqingGUNTOORI, Bhaskar ReddyZHAO, YajunKINSMAN, Aaron, C.FAUGHT, JodyCHOW, Alan
    • C07D207/34
    • C07D207/34
    • A process is provided for preparing (R)-5-[2-(4-fluorophenyl)-5-(l- methylethyl)-3-phenyl-4-[(phenylamino)carbonyl]-lH-pyrrol-l-yl]-5-hydroxy-3-oxo- 1-heptanoic acid, R-substituted ester 9 comprising: (a) reacting 5-(4-fluorophenyl)-2-(l -methylethyl)-l -(3-oxopropyl)-N,4- diphenyl-lH-pyrrole-3-carboxamide, 1, with the enolate form of (S)-2- hydroxy- 1 ,2,2-triphenylethyl acetate substituent in a chelating co- solvent; (b) hydrolysis of (R,S)-5-[2-(4-fluorophenyl)-5-(l -methylethyl)-3-phenyl- 4-[(phenylamino)carbonyl]- 1 H-pyrrol- 1 -yl]-3-hydroxy- 1 -pentanoic acid, (S)-2 -hydroxy- 1 ,2,2-triphenylethyl ester (2a and 2b) using a base, preferably an alkali metal base, preferably in a solvent to form the (R,S)-5-[2-(4-fluorophenyl)-5-(l -methylethyl)-3-phenyl-4- [(phenylamino)carbonyl]- 1 H-pyrrol- 1 -yl]-3 -hydroxy- 1 -pentanoic acid, 7; (c) treating the carboxylic acid 7 with a chiral base to form a salt and purifying the salt to obtain enantiomerically enriched (R)-7 chiral base salt; (d) alkylation of the (R)-7 chiral base salt or the free acid derived from (R)-7, forming (R)-5-[2-(4-fluorophenyl)-5-(l-methylethyl)-3-phenyl- 4-[(phenylamino)carbonyl]-lH-pyrrol-l-yl]-5-hydroxy-3-oxo-l- heptanoic acid, R-substituted ester 9, wherein the R substituent is a Cl to C6 alkyl, C6 to C9 aryl or C7 to Cl0 aralkyl. Subsequently, R-substituted ester 9 may be converted into atorvastatin calcium 6 based on procedures known in the art.
    • 提供了制备(R)-5- [2-(4-氟苯基)-5-(1-甲基乙基)-3-苯基-4 - [(苯基氨基)羰基] -1H-吡咯-1-基] -5-羟基-3-氧代-1-庚酸,R-取代的酯9,其包含:(a)使5-(4-氟苯基)-2-(1-甲基乙基)-1-(3-氧代丙基)-N ,4-二苯基-1H-吡咯-3-甲酰胺,1,在螯合助溶剂中具有(S)-2-羟基-1,2-二苯基乙基乙酸酯取代基的烯醇化物形式; (b)(R,S)-5- [2-(4-氟苯基)-5-(1-甲基乙基)-3-苯基-4 - [(苯基氨基)羰基] -1H-吡咯-1-基 吡啶-3-基] -3-羟基-1-戊酸,(S)-2-羟基-1,2-二苯基乙酯(2a和2b),使用碱,优选碱金属碱,优选在溶剂中形成 (R,S)-5- [2-(4-氟苯基)-5-(1-甲基乙基)-3-苯基-4 - [(苯基氨基)羰基] -1H-吡咯-1-基] 羟基-1-戊酸,7; (c)用手性碱处理羧酸7以形成盐并纯化该盐以获得对映体富集的(R)-7手性碱盐; (d)(R)-7手性碱盐或衍生自(R)-7的游离酸的烷基化,形成(R)-5- [2-(4-氟苯基)-5-(1-甲基乙基) 3-苯基-4 - [(苯基氨基)羰基] -1H-吡咯-1-基] -5-羟基-3-氧代-1-庚酸R-取代的酯9,其中R取代基是C1至C6 烷基,C 6至C 9芳基或C 7至C 10芳烷基。 随后,基于本领域已知的方法,R取代的酯9可以转化成阿托伐他汀钙6。