The invention concerns a method for preparing 4-hydroxyisoleucine diastereoisomers and enantiomers and derivatives thereof of general formula (I), characterized in that it consists in reducing an isoxazole derivative of formula (II) in conditions directly resulting in the derivatives of formula (I), or in obtaining at least a lactone of structure (III) in racemic form(s), or a enantiomerically enriched mixture, followed by opening, in basic conditions, in an aprotic or protic solvent, the desired lactone(s) and, optionally, separating the desired form. The invention is useful for preparing in particular (2S, 3R, 4S)-4-hydroxyisoleucine
该发明涉及一种制备
4-羟基
异亮氨酸对映体和差向异构体及其衍
生物的方法,其一般式为(I),其特征在于它包括在直接导致式(I)衍
生物的条件下还原一种
异噁唑烷衍
生物的步骤,或者在获得至少一种外消旋形式的结构为(III)的内酯,或者在手性富集混合物中,然后在碱性条件下,在无极性或极性溶剂中开环所需的内酯,并且可选地分离所需的形式。该发明可用于特别制备(2S, 3R, 4S)-
4-羟基
异亮氨酸。