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    • 4. 发明申请
    • IMPROVED PROCESS FOR TRANS-6-[2-(SUBSTITUTED-PYRROL-1-YL)ALKYL]PYRAN-2-ONE INHIBITORS OF CHOLESTEROL SYNTHESIS
    • 改进方法TRANS-6- [2-(取代的吡咯-1-基)烷基]吡喃-2-酮抑制剂胆固醇的合成
    • WO1989007598A2
    • 1989-08-24
    • PCT/US1989000719
    • 1989-02-22
    • WARNER-LAMBERT COMPANYBUTLER, Donald, EugeneDEERING, Carl, FrancisMILLAR, AlanNANNINGA, Thomas, NormanROTH, Bruce, David
    • WARNER-LAMBERT COMPANY
    • C07D405/06
    • C07D319/08C07C235/80C07D207/34C07D319/06C07D405/06
    • An improved process for the preparation of trans-6-[2-(substituted-pyrrol-1-yl)alkyl]pyran-2-ones by a novel synthesis is described where 1,6-heptadien-4-ol is converted in eight operations to the desired products, as well as an improved process for the preparation of (2R-trans) and trans-(U)-5-(4-fluoro-phenyl)-2-(1-methylethyl)-N,4-diphenyl-1-[2-(tetrahydro-4-hydroxy-6-oxo-2H-pyran-2-yl)ethyl]-1H-pyrrole-3-carboxamide by a novel synthesis where 4-methyl-3-oxo-N-phenylpentanamide is converted in eight operations to the desired product or alternatively 4-fluoro-alpha-[2-methyl-1-oxopropyl]-gamma-oxo-N,beta-diphenylbenzenebutaneamide is converted in one step to the desired product, and additionally, a process for preparing (2R-trans)-5-(4-fluorophenyl)-2-(1-methylethyl)-N,4-diphenyl-1-[2-(tetrahydro-4-hydroxy-6-oxo-2H-pyran-2-yl)ethyl]-1H-pyrrole-3-carboxamide from (R)-4-cyano-3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]butanoic acid, as well as other valuable intermediates used in the processes.
    • 它已经开发了一种改进的方法,用于反式-6-的制备[2-(取代的吡咯-1-基)烷基]吡喃-2-酮由一个新的合成装置,用于将1,6-heptadiène- 在所需产品中进行8次操作。 制备(2R-反式)和反式 - (U)-5-(4-氟 - 苯基)-2-(1-甲基乙基)-N,4-二苯基-1的改进方法也被开发出来。 [2-(四氢-4-羟基-6-氧代-2H-吡喃-2-基)乙基]使用新的合成用于将4-甲基-3-氧代-1H-吡咯-3-甲酰胺 -N苯基戊酰胺在八个操作中,期望的产物或在另一个实施方案中变换4-氟-α-[2-甲基-1-氧代丙基〕-gamma氧代-N,β-diphénylbenzènebutaneamide在一个步骤中 在期望的产品中。 已经进一步开发出一种方法,用于制备式(2R-反式)-5-(4-flurophényle)-2-(1-甲基乙基)-N,4-二苯基-1- [2-(四氢 4-羟基-6-氧代-2H-吡喃-2-基)乙基]从(R)-4-氰基-3- -1H-吡咯-3-甲酰胺 - [[(1,1-二甲乙基)二甲基甲硅烷 ]氧]丁酸,以及在该方法中使用的其他有价值的中间体。