The invention relates to a method for the preparation of a 4,5-dihydroxyisoleucine derivative comprising the steps of asymmetric Claisen rearrangement of a Z-aminocrotyl-glycin ester and subsequent kinetic resolution of the product diastereomer mix by acylase, and subsequent Sharpless dihydroxylation of the resulting 2-amino-3-methylpent-4-enoicacid derivative.
该发明涉及一种制备4,5-二羟基
异亮氨酸衍
生物的方法,包括Z-
氨基环丙基甘
氨酸酯的不对称克莱森重排步骤,随后通过酰化酶对产物对映体混合物进行动力学拆分,以及随后对所得的2-
氨基-3-甲基戊-4-烯酸衍
生物进行夏普利斯二羟基化的步骤。