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发明授权
CN104744377B 一种(E)‑3‑[4‑(4‑氟苯基)‑6‑异丙基‑2‑(N‑甲基‑N‑甲磺酰胺基)嘧啶‑5‑基]丙烯醛的制备方法 有权 转让

一种(E)‑3‑[4‑(4‑氟苯基)‑6‑异丙基‑2‑(N‑甲基‑N‑甲磺酰胺基)嘧啶‑5‑基]丙烯醛的制备方法
摘要：
本发明公开一种可作为瑞舒伐他汀钙中间体的(E)‑3‑[4‑(4‑氟苯基)‑6‑异丙基‑2‑(N‑甲基‑N‑甲磺酰胺基)嘧啶‑5‑基]丙烯醛的制备方法，包括：将式IV所示的4‑(4‑氟苯基)‑6‑异丙基‑2‑(N‑甲基‑N‑甲磺酰胺基)嘧啶‑5‑基‑甲醛与硫叶立德试剂在碱性条件下反应生成式III所示的环氧化物，然后在金属催化剂作用下还原生成式II化合物，接着由式II化合物反应生成产物。该方法工艺简便，成本低，避免了采用价格昂贵的催化剂，可有效减少副产物的生成，使得后处理简单、易于操作，且反应收率大大提高，更为适合大规模工业化生产。
摘要（英）：

The invention discloses a preparation method of (E)-3-[4-(4-fluorophenyl)-6-isopropyl-2-(N-methyl-N-methanesulfonylamino) pyrimidine-5-yl] acrolein which can be used as a rosuvastatin intermediate. The preparation method comprises the following steps: reacting 4-(4-fluorophenyl)-6-isopropyl-2-(N-methyl-N-methanesulfonylamino) pyrimidine-5-yl-formaldehyde with a sulfur ylide reagent under an alkaline condition to generate an epoxide shown in the formula III; then, reducing in the presence of a metal catalyst to generate a compound shown in the formula II; and finally reacting the compound shown in the formula II to generate the target product. The preparation method is simple in process and low in cost; no expensive catalyst is used; the generation of byproducts is reduced effectively so that the post-treatment becomes simple and easy to operate; in addition, the reaction yield is improved greatly; and therefore, the preparation method is quite suitable for large-scale industrial production.

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