Aromatic capping surprisingly stabilizes furan moieties in peptides against acidic degradation
作者:Kurt Hoogewijs、Annelies Deceuninck、Annemieke Madder
DOI:10.1039/c2ob25548k
日期:——
We herein describe the synthesis of furan containing peptides for further post-synthetic derivatisation in solution through our recently developed furan-oxidation-labeling technology. Previously, it was reported by others that during acidic cleavage of furan-modified peptides, furan moieties can suffer from degradation. We demonstrate here that this degradation is position dependent and can be fully suppressed through introduction of proximate aromatic residues. Versatile introduction of 2-furylalanine at internal, C-terminal as well as the sensitive N-terminal positions has now been proven possible.
我们在此描述了含呋喃肽的合成,以便通过我们最近开发的呋喃氧化标记技术进行后合成衍生化。之前,其他研究者报告指出,在酸性裂解呋喃修饰肽的过程中,呋喃基团可能会发生降解。我们在此证明,这种降解是位置依赖的,并且通过引入相邻的芳香残基可以完全抑制。现已证明,在内部、C末端以及敏感的N末端位置灵活引入2-呋喃基丙氨酸是可行的。