1,3-Dipolar cycloaddition of a chiral nitrone to (E)-1,4-dichloro-2-butene: a new efficient synthesis of (2S,3S,4R)-4-hydroxyisoleucine
作者:Kaïss Aouadi、Erwann Jeanneau、Moncef Msaddek、Jean-Pierre Praly
DOI:10.1016/j.tetlet.2012.03.110
日期:2012.6
1,3-Dipolar cycloaddition of a chiral nitrone derived from (−)-menthone to (E)-1,4-dichlorobut-2-ene was the key step in a novel 5 step synthesis of (2S,3S,4R)-4-hydroxyisoleucine, obtained in 21% overall yield with high enantiopurity.
从(-)-薄荷酮衍生的手性硝酮与(E)-1,4-二氯丁-2-烯的1,3-偶极环加成反应是新的5步合成(2 S,3 S,4 R)-4-羟基异亮氨酸,以21%的总收率获得,具有高对映体纯度。