Synthesis and DNA/RNA Binding Properties of Conformationally Constrained Pyrrolidinyl PNA with a Tetrahydrofuran Backbone Deriving from Deoxyribose
作者:Pitchanun Sriwarom、Panuwat Padungros、Tirayut Vilaivan
DOI:10.1021/acs.joc.5b00890
日期:2015.7.17
following an 11-step reaction sequence. The tetrahydrofuran amino acid is used as a building block for a new peptide nucleic acid (PNA), which exhibits excellent DNA binding affinity with high specificity. It also shows preference for binding to DNA over RNA and specifically in the antiparallel orientation. In addition, the presence of the hydrophilic tetrahydrofuran ring in the PNA structure reduces nonspecific
糖衍生的环状β-氨基酸是设计折叠剂和其他仿生结构的重要组成部分。我们在此报告了C活化的N - Fmoc保护的反式-(2 S,3 S)-3-氨基四氢呋喃-2-羧酸的首次合成,作为Fmoc固相肽合成的基础。从2-deoxy- d开始-核糖,按照11步反应顺序,以6.7%的总收率获得产物。四氢呋喃氨基酸用作新肽核酸(PNA)的构件,该肽核酸具有出色的DNA结合亲和力和高特异性。它还显示了与DNA结合的优先于RNA的结合,特别是在反平行方向上。另外,在PNA结构中亲水四氢呋喃环的存在减少了非特异性相互作用和自聚集,这由于其疏水性而在PNA中是一个普遍的问题。