The present invention belongs to the technical field of organic chemistry, and specifically relates to a method for preparing rosuvastatin sodium. The method of the invention comprises: reducing 4-p-fluorophenyl-6-isopropyl-2-(N-methyl-methylsulfonylamino)pyrimidine-5-carboxylic acid (VII) in the presence of a borohydride, an alkyl-substituted chlorosilane and an assistance in an organic solvent to prepare 4-p-fluorophenyl-5-hydroxymethyl-6-isopropyl-2-(N-methyl-methylsulfonylamino) pyrimidine (VIII); then performing a reaction of the compound VIII with a triphenyl phosphonium salt in an organic solvent to prepare a ((4-p-fluorophenyl-6-isopropyl-2-(N-methyl-methylsulfonylamino)-5-pyridyl)-methyl)triphenyl phosphonium salt (IX); performing a stereoselective Michael addition reaction of (S)-trans-4,5-dihydroxy-pent-2-olefine acid ester (II) with furfural (III) to prepare a 2-((4R,6S)-2-(furan-2-yl)-6-hydroxymethyl-1,3-dioxane-4-yl)acetate (IV); oxidizing the compound IV to prepare a 2-((4R,6S)-2-(furan-2-yl)-6-formacyl-1,3-dioxane-4-yl)acetate (V); performing an olefination reaction of the compound V with the (4-p-fluorophenyl-6-isopropyl-2-(N-methyl-methylsulfonylamino)pyrimid-5-yl)-methyl triphenyl substituted phosphonium salt (IX) or phosphate to prepare 2-((4R,6S)-6-(trans-2-(4-p-fluorophenyl-6-isopropyl-2-(N-methyl-methylsulfonylamino)pyrimid-5-yl)vinyl)-2-(furan-2-yl)-1,3-dioxane-4-yl)acetate (VI); and performing deprotection and sodium salt formation of compound VI to prepare rosuvastatin sodium (I). The method has easily obtainable raw materials, and is simple to operate and suitable for industrial productions.
本发明属于有机
化学技术领域,具体涉及一种制备罗舒伐他汀
钠的方法。该发明的方法包括:在有机溶剂中存在
硼氢化物、烷基取代
氯硅烷和辅助剂的情况下,还原4-对
氟苯基-6-异丙基-2-(N-甲基-甲
磺胺基)
嘧啶-5-
羧酸(VII)以制备4-对
氟苯基-
5-羟甲基-6-异丙基-2-(N-甲基-甲
磺胺基)
嘧啶(VIII);然后在有机溶剂中,将化合物VIII与三苯基
磷酸盐反应以制备((4-对
氟苯基-6-异丙基-2-(N-甲基-甲
磺胺基)-5-
吡啶基)-甲基)三苯基
磷酸盐(IX);将(S)-反式-4,5-二羟基-戊-2-烯酸酯(II)与
呋喃醛(III)进行立体选择性的迈克尔加成反应以制备2-((4R,6S)-2-(
呋喃-2-基)-6-羟甲基-1,3-二氧杂环己-4-基)
醋酸酯(IV);将化合物IV氧化以制备2-((4R,6S)-2-(
呋喃-2-基)-6-甲酰基-1,3-二氧杂环己-4-基)
醋酸酯(V);将化合物V与(4-对
氟苯基-6-异丙基-2-(N-甲基-甲
磺胺基)
嘧啶-5-基)-甲基三苯基取代
磷酸盐(IX)或
磷酸盐进行烯化反应以制备2-((4R,6S)-6-(反式-2-(4-对
氟苯基-6-异丙基-2-(N-甲基-甲
磺胺基)
嘧啶-5-基)
乙烯基)-2-(
呋喃-2-基)-1,3-二氧杂环己-4-基)
醋酸酯(VI);并对化合物VI进行去保护和钠盐形成以制备罗舒伐他汀
钠(I)。该方法原料易得,操作简单,适用于工业生产。