The present disclosure relates to an improved synthesis of the commercially important syntheton ECHB starting from the readily available 3-hydroxy-Ϝ-butyrolactone. The reaction employs a single pot procedure without isolation or purification of the intermediates. It has the advantage over procedures previously employed in the art of using reagents and conditions which minimize undesired side reactions and which can be readily employed at commercial scale. The product is produced in high yield and is readily purified to provide an excellent intermediate for further synthesis of commercially important products such as L-carnitine and the pharmaceutically important active substances used in HMG-coA reductase inhibitor products such as Lipitorè.
本公开涉及一种改进的合成方法,用于从易获得的3-羟基-Ϝ
-丁内酯出发合成商业重要的合成物E
CHB。该反应采用一锅法进行,无需分离或纯化中间体。与先前在艺术中使用的程序相比,它具有优势,使用试剂和条件可以最大程度地减少不良副反应,并且可以轻松在商业规模上使用。产物产率高,并且可以轻松纯化,为进一步合成商业重要产品(如
左旋肉碱和用于
HMG-CoA还原酶
抑制剂产品(如利普妥)中的药用重要活性物质)提供优质中间体。