Ring Closing and Macrocyclization of β-Dipeptides by Olefin Metathesis
作者:Basker Sundararaju、Tailor Sridhar、Mathieu Achard、Gangavaram V. M. Sharma、Christian Bruneau
DOI:10.1002/ejoc.201300608
日期:2013.10
β-Dipeptides containing allyl groups at different positions on the peptide backbone were prepared. Ring-closing metathesis of these β-dipeptides with the use of a ruthenium catalyst led to medium-sized cyclic β-dipeptides and macrocyclic tetrapeptides, depending on the nature of the allylic substitution on the β-dipeptides.
Preparation of Sugar β-Amino Acid Derivatives with Cyclic Structures by Ring-Closing Metathesis
作者:Basker Sundararaju、Tailor Sridhar、Mathieu Achard、Gangavaram V. M. Sharma、Christian Bruneau
DOI:10.1002/ejoc.201000923
日期:2010.11
Efficient syntheses of β-amino acid derivatives with cyclic structures were developed. The key steps involve aza-Michael addition and ruthenium-catalyzed allylation for the construction of new acyclic β-amino acid dienes incorporating a sugar fragment, and a ruthenium-catalyzed ring-closing metathesis for the construction of the seven- and nine-membered ring compounds.
Synthesis and conformational studies of α/β<sup>2,3</sup>-peptides derived from alternating β<sup>2,3</sup>-amino acids and<scp>l</scp>-Ala repeats
作者:Gangavaram V. M. Sharma、Tailor Sridhar、Bacchu Veena、Pothula Purushotham Reddy、Sheri Venkata Reddy、Christian Bruneau、Ajit C. Kunwar
DOI:10.1039/c4nj02031f
日期:——
A new class of α/β2,3-peptides were synthesized from C-linked carbo-β2,3-amino acids (β2,3-Caas) and investigated to understand the impact of the side chains (allyl/propargyl) at the Cα-position on their conformations.