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.
本文描述了一种改进的工艺,通过一种新的合成方法,将甲基
氰乙酸酯转化为所需产物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,仅需进行八次或更少的操作即可制得所需产品,同时还制备了其他有用的中间体,用于该工艺。