Multivalent presentation of carbohydrates by 3<sub>14</sub>-helical peptide templates: synthesis, conformational analysis using CD spectroscopy and saccharide recognition
作者:Nitin J. Pawar、Ulf Diederichsen、Dilip. D. Dhavale
DOI:10.1039/c5ob01673h
日期:——
A tetrameric glycoconjugate template, SSFT 1, was coupled with a variety of six aminooxy sugars to achieve multivalent glycoconjugates 2–7.
To gain mechanisticinsights, natural systems with biochemical relevance are inspiring for the creation of new biomimetics with unique properties and functions. Despite progress in rational design and protein engineering, folding and intramolecular organization of individual components into supramolecularstructures remains challenging and requires controlled methods. Foldamers, such as β‐peptides
Configuration-Dependent Medium-Sized Ring Formation: Chiral Molecular Framework with Three-Dimensional Architecture
作者:Naděžda Cankařová、Agustina La Venia、Soňa Krajčovičová、Viktor Krchňák
DOI:10.1021/acs.joc.8b02465
日期:2019.1.18
formation via a tandem cyclic N-acyliminium nucleophilic addition reaction. Cyclization of the acyclic precursor prepared on a solid phase using l-Ser and a racemic mixture of Fmoc-trans-2-aminocyclohexanecarboxylic acid predominantly yielded the cyclic diastereomer with the (1R,2R)-2-aminocyclohexane moiety rather than the tricyclic diastereomer from the (1S,2S)-enantiomer. In contrast, the model compound
A new peptideligation strategy based on a side-chain auxiliary was developed; the auxiliary is fairly simple and can be removed, without product isolation, under basic conditions.