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The Synthesis and Applications of Sulfoxide Ligands and Methodology Development Towards Beta-Amino Acid Incorporation in Peptides

The use of sulfoxide ligands for transition metal catalyzed transformations has recently been brought to the forefront in organic chemistry. The synthesis of a series of tri- and disulfoxides will be presented, and their applications investigated. Their use in rhodium catalyzed 1,4-additions of phenylboronic acid to 2-cyclohexen-1-one result in enantioselectivities up to 80%.
The incorporation of β-amino acid residues into polypeptides has resulted in new foldamers whose structures and enhanced stability provide interesting opportunities for new biological applications. A novel strategy for an iterative peptide synthesis involving β-amino acids will be proposed. Lastly, a hydroamidation-type strategy for the construction of β3-amino acids, or more specifically of β-(N-acylamino)acrylates, will be presented as preliminary work towards the goal of dipeptide synthesis.

Identiferoai:union.ndltd.org:TORONTO/oai:tspace.library.utoronto.ca:1807/27351
Date31 May 2011
CreatorsLeung, Priscilla
ContributorsDong, Vy Maria
Source SetsUniversity of Toronto
Languageen_ca
Detected LanguageEnglish
TypeThesis

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