作者:Xu Cheng、Xiaocen Li、Yanjun Duan、Yongguo Yu、Li Hai、Yong Wu
DOI:10.1016/j.steroids.2014.03.009
日期:2014.6
In this study, we describe another new and efficient route for preparing Ulipristal acetate. The 1,4-addition compound 5 was greatly improved after the starting material ketone 1 was underwent epoxidation, cyanation, hydroxyl group protection and Grignard addition. The synthetic procedure is only 6 steps and the total yield is about 27.4%, which is much suitable for industrial process.
在这项研究中,我们描述了另一种制备乙酸尿U醛的有效途径。在对起始原料酮1进行环氧化,氰化,羟基保护和格氏加成反应后,大大提高了1,4-加成化合物5的含量。合成过程只有6个步骤,总收率约为27.4%,非常适合工业过程。