麻黄素转旋工艺研究

Study on the Rotation Technology of Ephedrine

介绍了左旋麻黄素经过酰化、成盐、水解工艺过程转旋为右旋麻黄素。给出各工艺过程的优化条件，转旋过程三步总收率大于９８％。

D-ephedrine was made from L-ephedrine through the acidylation,salification and hydrolytic action. The optimum conditions has been given and the overall yield of the three steps in rotation process is over 98%.