Process for trans-6-[12-(substituted-pyrrol-1-yl)alkyl]pyran-2-one
inhibitors of cholesterol synthesis
    9.
    发明授权
    Process for trans-6-[12-(substituted-pyrrol-1-yl)alkyl]pyran-2-one inhibitors of cholesterol synthesis 失效
    反式-6- [12-(取代 - 吡咯-1-基)烷基]吡喃-2-酮胆固醇合成抑制剂的方法

    公开(公告)号:US5216174A

    公开(公告)日:1993-06-01

    申请号:US891602

    申请日:1992-06-01

    摘要: 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-heptadien4-ol is converted in eight operations to the desired products, as well as an improved process for the preparation of (2R-trans) and trans-(.+-.)-5-(4-fluorophenyl)-2-(1-methylethyl)-N,4-diphenyl-1-[2-(tetrahydro4-hydroxy-6-oxo-2H-pyran-2-yl)ethyl]-1H-pyrrole-3carboxamide by a novel synthesis where 4-methyl-3-oxoN-phenylpentanamide is converted in eight operations to the desired product or alternatively 4-fluoro-.alpha.-[2methyl-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]-1Hpyrrole-3-carboxamide from (R)-4-cyano-3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]butanoic acid, as well as other valuable intermediates used in the processes.

    摘要翻译: 描述了通过新的合成制备反式-6- [2-(取代的 - 吡咯-1-基)烷基]吡喃-2-酮的改进方法,其中将1,6-庚二烯-4-醇在八个操作中转化为 (+/-)-5-(4-氟苯基)-2-(1-甲基乙基)-N,4-二苯基 - 哌嗪的制备方法, 乙基] -1H-吡咯-3-甲酰胺通过新的合成法,其中4-甲基-3-氧代-N-苯基戊酰胺在八次操作中转化得到1- [2-(叔 - 羟基-6-羟基-6-氧代-2H-吡喃-2-基)乙基] 或者将4-氟-α-[2-甲基-1-氧代丙基]-γ-氧代-N,β-二苯基苯丁酰胺在一个步骤中转化成所需的产物,另外,制备(2R-反式 )-5-(4-氟苯基)-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 ] -1H-吡咯-3-甲酰胺,由(R)-4-氰基-3 - [[(1,1-二甲基乙基)二甲基甲硅烷基]氧基]丁酸以及其它有价值的中间体 过程。