作者:Yi Zhao、Xiaolong Li、Hong Liu、Yongguo Yu、Li Hai、Li Guo、Yong Wu
DOI:10.1016/j.steroids.2014.12.009
日期:2015.3
The three stereoisomers, 11α,17α-isomer I, 11α,17β-isomer II and 11β,17β-isomer III are related substances of the selective progesterone receptor modulator Ulipristal acetate. Herein, we presented an efficient and practical synthesis approach to deliver these three stereoisomers for the first time, and also confirmed the structure of the key intermediate 5a by single-crystal X-ray analysis. Our research
三种立体异构体,11α,17α-异构体 I、11α,17β-异构体 II 和 11β,17β-异构体 III 是选择性孕酮受体调节剂醋酸乌利司他的相关物质。在此,我们首次提出了一种高效实用的合成方法来传递这三种立体异构体,并通过单晶 X 射线分析确认了关键中间体 5a 的结构。我们的研究将为有机化学家研究醋酸乌利司他的杂质谱提供巨大帮助。