申请人:DSM Sinochem Pharmaceuticals Netherlands B.V.
公开号:US10246423B2
公开(公告)日:2019-04-02
The present invention relates to a process for preparing a statin precursor, which process comprises a first reaction step, wherein a hydroxy-pyrimidine-carbonitrile is reacted with an organic sulfonyl halide to form the sulfonate-pyrimidine-carbonitrile; a second reaction step, wherein the sulfonate-pyrimidine-carbonitrile is reacted with N-methylmethane sulfonamide to form a pyrimidinyl-sulfonamide; and optionally a third reaction step, wherein the pyrimidinyl-sulfonamide is reacted with a reducing agent. All steps are conducted in toluene as the main solvent.
本发明涉及一种制备他汀类药物前体的工艺,该工艺包括第一反应步骤,其中羟基嘧啶-腈与有机磺酰卤反应生成磺酸基嘧啶-腈;第二步反应,其中磺酸基嘧啶-腈与 N-甲基甲磺酰胺反应生成嘧啶基磺酰胺;以及第三步反应,其中嘧啶基磺酰胺与还原剂反应。所有步骤均以甲苯为主溶剂。