Efficient Synthesis of Suitably Protected β-Difluoroalanine and γ-Difluorothreonine from <scp>l</scp>-Ascorbic Acid
作者:Gongyong Li、Wilfred A. van der Donk
DOI:10.1021/ol062401a
日期:2007.1.1
Fluorinated amino acids are useful building blocks for the preparation of biologically active peptides and peptidomimetics with increased metabolic stability. We report here the synthesis of two fluorinated amino acids, beta-difluoroalanine and gamma-difluorothreonine, as analogues of Ser and Thr, respectively. These compounds were suitably protected for Fmoc-based solid-phase peptide synthesis. Once incorporated
[反应:见正文]氟化氨基酸是用于制备生物活性肽和拟肽的具有较高代谢稳定性的有用组成部分。我们在这里报告了两种氟化氨基酸的合成,分别是Ser和Thr的类似物β-二氟丙氨酸和γ-二氟苏氨酸。这些化合物被适当地保护用于基于Fmoc的固相肽合成。一旦掺入肽中,它们就可以用作羊毛硫抗生素合成酶的替代底物或抑制剂,它们可以将Ser和Thr残基分别翻译后脱水为脱氢丙氨酸和脱氢丁胺。