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    • 4. 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。