Studies on the total synthesis of lactacystin. An improved aldol coupling reaction and a β-lactone intermediate in thiol ester formation
作者:E.J. Corey、Gregory A. Reichard、Robert Kania
DOI:10.1016/s0040-4039(00)61575-7
日期:1993.10
improved by using the zirconium enolate derived from (R)- or (S)-2-siloxy-1,2,2-triphenylpropionate which lead stereospecifically to either (6S, 7R) or (6R, 7S) lactacystin, respectively. The formation of the thiol ester in the synthesis of 1 proceeds mainly via a β-lactone intermediate.
通过使用衍生自(R)-或(S)-2-甲硅烷氧基-1,2,2-三苯丙酸酯的烯醇化锆改进了最近开发的乳腺素(1)的全合成,该立体定向生成任一(6S,7R)或(6R,7S)乳腺素。在1的合成中硫醇酯的形成主要通过β-内酯中间体进行。