tripeptide methyl esters [Z-/Boc-5 to -12(pept)] was prepared using the amino acids glycine, alanine and valine. In both the alanine and the valine series a single glycine unit was introduced and its position inside the tripeptide framework was systematically varied. Reaction of these 16 tripeptide derivatives with the organometallic reagent [Cp2TiCH3(THF)+][BPh4−] (13) resulted in the formation of
Biomimetic studies using artificial system. IV. Biomimetic peptide synthesis by using multi-functionalized crown ethers as a novel enzyme model. A new concepts in mimicking of enzyme-catalyzed bond-forming reactions.
作者:Shigeki SASAKI、Kenji KOGA
DOI:10.1248/cpb.37.912
日期:——
A novel approach to the mimicking of enzyme-catalyzed bond-forming reactions has been examined using multifunctionalized chiral crownethers. In addition to the 18-crown-6 moiety as a binding site, the host have one thiol and one thio ester with an N-protected alpha-amino acid or a peptide, and have successfully achieved peptide synthesis in an enzyme-mimetic reaction mode. This new method involves