A Non‐coded β
<sup>2,2</sup>
‐Amino Acid with Isoxazoline Core Able to Stabilize Peptides Folding through an Unprecedented Hydrogen Bond
作者:Raffaella Bucci、Francesco Vaghi、Davide Di Lorenzo、Francesco Anastasi、Gianluigi Broggini、Leonardo Lo Presti、Alessandro Contini、Maria Luisa Gelmi
DOI:10.1002/ejoc.202200601
日期:2022.10.20
containing a β2,2-isoxazoline amino acid, 5-(aminomethyl)-3-phenyl-4,5-dihydroisoxazole-5-carboxylic acid (Isox-β2,2AA), were prepared and studied by NMR and theoretical calculations. Interestingly, inserting R-Isox-β2,2AA in short tri- and hexapeptide models, an unexpected α-turn-like motif was observed, thanks to an unprecedented strong H-bond involving C=N of isoxazoline side chain of β2,2AA.
制备了含有 β 2,2-异恶唑啉氨基酸 5-(氨基甲基)-3-苯基-4,5-二氢异恶唑-5-羧酸 (Isox-β 2,2 AA) 的新型肽模拟物,并通过 NMR 和理论计算。有趣的是,在短的三肽和六肽模型中插入R -Isox-β 2,2 AA,观察到意想不到的 α-转角样基序,这要归功于涉及 β 2异恶唑啉侧链的 C=N 的前所未有的强 H 键,2 AA。