Rapid access to cis-cyclobutane γ-amino acids in enantiomerically pure form
作者:Virginie André、Anne Vidal、Jean Ollivier、Sylvie Robin、David J. Aitken
DOI:10.1016/j.tetlet.2011.01.013
日期:2011.3
The (+)-(1R,2S) and (−)-(1S,2R) stereoisomers of 2-(aminomethyl)cyclobutane-1-carboxylic acid have been prepared using a short and efficient strategy, which employs the photochemical [2+2] cycloaddition reaction between ethylene and an unsaturated γ-lactam as the key step.
Conformational Effects through Hydrogen Bonding in a Constrained γ-Peptide Template: From Intraresidue Seven-Membered Rings to a Gel-Forming Sheet Structure
作者:Hawraà Awada、Claire M. Grison、Florence Charnay-Pouget、Jean-Pierre Baltaze、François Brisset、Régis Guillot、Sylvie Robin、Ali Hachem、Nada Jaber、Daoud Naoufal、Ogaritte Yazbeck、David J. Aitken
DOI:10.1021/acs.joc.7b00494
日期:2017.5.5
conformers, including ribbonlike structures pleated around a rarely observed series of intramolecular seven-membered hydrogen bonds. In more concentrated solutions, these interactions defer to an organized supramolecular assembly, leading to thermoreversible organogel formation notably for the tripeptide, which produced fibrillar xerogels. In the solid state, the dipeptide adopted a fully extended conformation