An efficient synthesis of prasugrel, a thienopyridine ADP-receptor antagonists, is described. A thienopyridine inter-mediate was prepared by N-protection, boric acid substitution and N-substitution. After acid hydrolysis of the methyl ether and subsequent acetylation, prasugrel was obtained with a total yield of 50% after seven linear steps from 4,5,6,7-tetrahydrothieno [3,2-c]pyridine and 2-bromo-1-cyclopropyl-2-(2- fluorophenyl)ethan-1-one as raw materials.
本文介绍了一种噻吩并吡啶ADP受体拮抗剂普拉格雷的高效合成方法。通过 N 保护、硼酸取代和 N 取代制备了一种噻吩吡啶中间体。以 4,5,6,7-四氢噻吩并[3,2-c]吡啶和 2-溴-1-环丙基-2-(2-氟苯基)乙-1-酮为原料,经过酸水解甲醚和随后的乙酰化反应,在七个线性步骤后得到普拉格雷,总产率为 50%。