The invention relates, in general, to an improved process for the preparation of the compounds (3R,4S)-4-(4-(benzyloxy)phenyl)-1-(4-fluorophenyl)-3-[3-(4-fluorophenyl)-3-oxopropyl]azetidin-2-one and (3R,4S)-1-(4-fluorophenyl)-3-[3-(4-fluorophenyl)-3-oxopropyl]-4-(4-hydroxyphenyl)-azetidin-2-one, which are key intermediates for the synthesis of ezetimibe, as well as the use of these intermediates for the preparation of ezetimibe.
本发明涉及一种改进的化合物制备方法,具体为制备(3R,4S)-4-(4-(苄氧基)苯基)-1-(4-
氟苯基)-3-[3-(4-
氟苯基)-3-氧代丙基]氮杂二
环己酮和(3R,4S)-1-(4-
氟苯基)-3-[3-(4-
氟苯基)-3-氧代丙基]-4-(
4-羟基苯基)氮杂二
环己酮这两种化合物,它们是制备
依折麦布的关键中间体,以及利用这些中间体制备
依折麦布。