Synthesis of a protected derivative of (2R,3R)-β-hydroxyaspartic acid suitable for Fmoc-based solid phase synthesis
作者:Boyaud France、Viguier Bruno、Inguimbert Nicolas
DOI:10.1016/j.tetlet.2012.10.120
日期:2013.1
Synthesis of d-threo-hydroxyaspartic acid, orthogonally protected and compatible with an Fmoc solid-phase peptide synthesis strategy is reported. This synthetic procedure starting from (2R,3R)-dimethyltartrate is adaptable to a multi-gram scale. 2,2-Dimethyl-5-oxo-1,3-dioxazolane formation between the β-hydroxy alcohol and the β-carboxylic functions constitutes a key step of the differentiation of
报告了正交保护并与Fmoc固相肽合成策略兼容的d-苏-羟基天冬氨酸的合成。从(2 R,3 R)-酒石酸二甲酯开始的该合成方法适用于多克规模。β-羟基醇和β-羧基官能团之间形成2,2-二甲基-5-氧代-1,3-二恶唑烷,这是区分两个酸性官能团的关键步骤,从而可以制备(2 R,3 R)-Fmoc-β-羟基天冬氨酸α-烯丙基酯。