The field of invention relates to a novel process, suitable for industrial scale manufacture, for the preparation of high-purity 5-[2-cyclopropyl-1-(2-fluorophenyl)-2-oxoethyl]-4,5,6,7- tetrahydrothieno[3,2-c]pyridine-2-yl acetate, prasugrel, of Formula (I). Especially in large-scale production, one of the main causes of piling up the impurities is the use of ether solvents consequently in each step in this procedure ethers are excluded. Avoiding the ethers resulted new conditions for production of intermediates in the different steps of our procedure. Conditions were determined so that each step from the beginning contributes to minimizing the impurity content of the end-product.
本发明涉及一种适用于工业规模制造的新型工艺,用于制备高纯度的5-[2-环丙基-1-(2-
氟苯基)-2-氧代乙基]-4,5,6,7-
四氢噻吩[3,2-c]
吡啶-2-
乙酸乙酯,
普拉格雷,
化学式(I)。特别是在大规模生产中,使用醚溶剂是造成杂质堆积的主要原因,因此在该过程的每个步骤中都排除了醚。避免醚产生了新的生产中间体的条件,在我们的过程的不同步骤中确定了条件。确定条件,使得从开始的每个步骤都有助于将末产品的杂质含量最小化。