Dihydropyran-2-carboxylic acid, a novel bifunctional linker for the solid-phase synthesis of peptides containing a C-terminal alcohol
作者:Hsing-Pang Hsieh、Ying-Ta Wu、Shui-Tein Chen
DOI:10.1039/a707934f
日期:——
Dihydropyran-2-carboxylic acid, a novel compound used to link an amino alcohol and an amine resin, is utilised for the solid-phase synthesis of peptide alcohols via the Fmoc strategy; this bifunctional linker was effectively applied to the synthesis of Octreotide.
alcohols cannot be synthesized by conventional solid‐phase peptide synthesis (SPPS) because of the absence of a free carboxylic group to attach to the resin. This problem was circumvented by anchoring a β‐amino alcohol residue to the resin to provide a starting point for SPPS. An intramolecular O–N acyl shift completed the synthesis of the desired peptides (see scheme).
A dual optical and nuclear imaging reagent for peptide labelling via disulfide bridging
作者:Sally A. Fletcher、Pak Kwan Brian Sin、Muriel Nobles、Erik Årstad、Andrew Tinker、James R. Baker
DOI:10.1039/c5ob01468a
日期:——
approach to a multimodal imaging reagent for peptidelabellingvia disulfide bridging. The reagent is constructed using a one pot, three component, [3 + 2] cycloaddition of a fluorescent azide with a dithiomaleimide-alkyne, with concomitant incorporation of 125I. The dithiomaleimide handle then enables site selective conjugation to a disulfide bond of a peptide whilst retaining the key structural bridging
Use of Trichloroacetimidate Linker in Solid-Phase Peptide Synthesis
作者:Liang Zeng Yan、John P. Mayer
DOI:10.1021/jo026405e
日期:2003.2.1
A solid-phase method for the preparation of C-terminal amino-alcohol-containing peptides using activated Wang resin is presented. A diverse set of (fluorenylmethoxy)carbonyl (Fmoc) protected amino alcohols was found to load rapidly and efficiently. The synthetic utility of this approach was demonstrated through the direct synthesis of the peptide drug octreotide with excellent yield and purity. These
through a short and stable ethylene linker, ideal for introduction of infrared labels, post-translational modifications or NMR probes. In the absence of reactive exogenous nucleophiles, nucleophilic amino acids can react with the episulfonium intermediate for native peptide stapling and protein–protein ligation. Ready synthetic access to isotopologues of vinyl thianthrenium salts enables applications in