申请人:Porcs-Makkay Márta
公开号:US20130030183A1
公开(公告)日:2013-01-31
The object of the present invention is a one-pot process for preparing the 2-acetoxy-5-(2-fluoro-α-cyclopropyl-carbonyl-benzyl)-4,5,6,7-tetrahydro-4H-tieno[3,2-c]-pyridine (prasugrel) of the formula (I) by reacting the 5,6,7,7a-tetrahydro-4H-tieno[3,2-c]-pyridine-2-on of the formula (II) with 2-bromo-1-cyclopropyl-2-(2-fluorophenyl)-etanone of the formula (III) or with 2-chloro-1-cyclopropyl-2-(2-fluorphenyl)-etanone of the formula (IIIa) and acetylating of the formed compound of the formula (IV), wherein the reaction is carried out in the presence of an organic base with an acetylation agent without isolating the compound of the formula (IV). The coupling and acetylation are carried out in the presence of the same organic base such as triethylamine, N,N-diisopropyl-ethylamine or pyridine. At the end of the process the prasugrel of the formula (I) is purified by recrystallization from an organic solvent or a mixture of solvents.
本发明的对象是一种一锅法制备2-乙酰氧基-5-(2-氟-α-环丙基-羰基-苯甲基)-4,5,6,7-四氢-4H-噻吩[3,2-c]-吡啶(prasugrel)的方法,通过将式(II)的5,6,7,7a-四氢-4H-噻吩[3,2-c]-吡啶-2-酮与式(III)的2-溴-1-环丙基-2-(2-氟苯基)-乙酮或式(IIIa)的2-氯-1-环丙基-2-(2-氟苯基)-乙酮反应,并使生成的化合物(IV)进行乙酰化,其中反应在有机碱和乙酰化剂的存在下进行,而无需分离式(IV)的化合物。偶联和乙酰化在同一有机碱的存在下进行,如三乙胺、N,N-二异丙基乙胺或吡啶。在过程结束时,通过在有机溶剂或溶剂混合物中重结晶来纯化式(I)的prasugrel。