An improved process for the preparation of 5-(4-fluorophenyl)-1-[2-((2R,4R)-4-hydroxy-6-oxo-tetrahydro-pyran-2-yl)-ethyl]-2-isopropyl-4-phenyl-1H-pyrrole-3-carboxylic acid phenylamide by a novel synthesis is described where methyl cyanoacetate is converted in eight operations or fewer to the desired product, as well as other valuable intermediates used in the process.
描述了一种改进的方法,通过新合成法制备5-(4-
氟苯基)-1-[2-((2R,4R)-
4-羟基-6-氧代-四氢-
吡喃-2-基)-乙基]-2-异丙基-4-苯基-1H-
吡咯烷-3-
羧酸苯酰胺,其中甲基
氰乙酸酯在八步或更少的操作中转化为所需的产物,以及在该过程中使用的其他有价值的中间体。