C6-Substituted methanopyrrolidine β-amino acid: synthesis and characterization of oligomeric foldamers
作者:Zilun Hu、Guoliang Lin、Matthew Sender、Kevin C. Cannon、Franklin A. Davis、Grant R. Krow
DOI:10.1016/j.tetlet.2020.152240
日期:2020.8
Highly conformation constrained β-proline based methanopyrrolidine-5-carboxylic acids (6, MetPyr-5-acids, or MetPyr-β-amino acids) derivatives were designed, synthesized, and investigated to control peptide conformation and oligomer folding. Enhanced order of folding uniformity correlated with length of the prepared homo-oligomers as characterized by circular dichroism (CD). The octamer (34) exhibited
Enantioselective Hydroformylation of Aniline Derivatives
作者:Candice L. Joe、Kian L. Tan
DOI:10.1021/jo201328d
日期:2011.9.16
We have developed a ligand that reversibly binds to aniline substrates, allowing for the control of regioselectivity and enantioselectivity in hydroformylation. In this paper we address how the electronics of the aniline ring affect both the binding of the substrate to the ligand and the enantioselectivity in this reaction.
Synthesis of Novel 3-Substituted Pyrrolo[2,3-<i>b</i>]quinoxalines via an Intramolecular Heck Reaction on an Aminoquinoxaline Scaffold