The Role of the Chiral<i>cis</i>-1,3-Disubstituted 2,2-Dimethylcyclobutane Motif in the Conformational Bias of Several Types of γ-Peptides
作者:Jordi Aguilera、Juan A. Cobos、Raquel Gutiérrez-Abad、Carles Acosta、Pau Nolis、Ona Illa、Rosa M. Ortuño
DOI:10.1002/ejoc.201300066
日期:2013.6
protected cis-3-amino-2,2-dimethylcyclobutane-1-carboxylic acid derivatives. The first series is constructed with only one enantiomer of this γ-amino acid, whereas in the second one both enantiomeric cyclobutane residues are joined in alternating fashion. The high degrees of rigidity in these γ-peptides induce the adoption of extended but sterically constrained conformations in both cases. The third series