The present invention relates to a processing method for preparing lovastatin and simvastatin which comprises the steps of (1) performing lactonization of mevinic acid and its homologous compounds in the presence of a mixed organic solvent without an acid catalyst through nitrogen sweep; and (2) making crystals. In the process of the present invention, lovastatin and simvastatin highly purified can be produced in a high yield and especially, heterodimers formed as a by-product can be reduced remarkably. Therefore, the processing method of the present invention can be convenient and economical.
本发明涉及一种制备
洛伐他汀和
辛伐他汀的加工方法,该方法包括以下步骤:(1) 在混合有机溶剂存在下,不使用酸催化剂,通过氮扫对甲vinic 酸及其同族化合物进行内酯化;(2) 制取晶体。在本发明的工艺中,可以高产率地生产出高纯度的
洛伐他汀和
辛伐他汀,特别是可以显著减少作为副产物形成的杂二聚体。因此,本发明的加工方法既方便又经济。