The present invention relates to an improved process for preparing (2E)-3-[4-(4-fluorophenyl)-6-iso-propyl-2-(N-methyl-N-methylsulfonylamino)pyrimidin-5-yl]-propenal of Formula I which is an intermediate useful in the preparation of bis[(E)-7-[4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl](3R,5S)-3,5-dihydroxyhept-6-enoicacid]calcium salt of Formula II.
本发明涉及一种改进的制备(2E)-3-[4-(4-
氟苯基)-6-异丙基-2-(N-甲基-N-甲基磺酰胺基)
嘧啶-5-基]-
丙烯醛I式化合物的方法,该化合物是制备双[(E)-7-[4-(4-
氟苯基)-6-异丙基-2-[甲基(甲基磺酰基)
氨基]
嘧啶-5-基](3R,5S)-3,5-二羟基
庚-6-烯酸钙盐II式化合物的中间体。