The development of a facile and general method for the preparation of enone derived α-amino acids is described. The key step involves a HornerâWadsworthâEmmons reaction between an aspartic acid derived β-keto phosphonate ester and a range of aldehydes resulting in the formation of highly functionalised α-amino acids in good yields. An efficient two-stage deprotection process using mild conditions was developed to give the parent α-amino acids. Application of this methodology has produced a novel fluorescent α-amino acid that has potential as a biological marker.
本文描述了一种简便且通用的方法,用于制备源自烯酮的
α-氨基酸。关键步骤涉及一种源自
天冬氨酸的β-酮
膦酸酯与一系列醛之间的Horner-Wadsworth-Emmons反应,从而以较高产率形成高度官能化的
α-氨基酸。研究开发了一种使用温和条件的两阶段脱保护高效工艺,得到母体
α-氨基酸。应用此方法已经制备出一种新型的荧光
α-氨基酸,该
氨基酸有潜力作为
生物标志物。