Synthesis of Highly Functionalized Amino Acids: An Expedient Access to L- and D-β-Hydroxyenduracididine Derivatives
作者:Clemens J. Schwörer、Markus Oberthür
DOI:10.1002/ejoc.200900971
日期:2009.12
available diacetone D-glucose. The key inversion reactions for the introduction of the two nitrogen groups at C-2 and C-4 afford products that are diastereomerically pure and easy to purify, thereby allowing the gram-scale preparation of βhEnd derivatives that are suitably protected for peptide coupling reactions. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
非蛋白氨基酸 (3S,4S)-L- 和 (3S,4S)-D-β-羟基enduracididine (βhEnd),每个都含有一个环胍基和三个连续的立体中心,是首次合成,从商业开始可用双丙酮D-葡萄糖。在 C-2 和 C-4 处引入两个氮基团的关键反转反应提供了非对映异构纯且易于纯化的产物,从而允许对肽偶联反应进行适当保护的 βhEnd 衍生物的克级制备。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)