A wide range of prochiral 1,3-diamines were first efficiently synthesized and subsequently desymmetrized by using lipase from Pseudomonas cepacia as catalyst and diallyl carbonate as alkoxycarbonylating agent. In all cases, the amino carbamates of R-configuration were recovered. Final selective cleavage of the N-allyloxycarbonyl moiety was carried out under mild reaction conditions, which demonstrates
Design and Synthesis of a Monofluoro-Substituted Aromatic Amino Acid as a Conformationally Restricted<sup>19</sup>F NMR Label for Membrane-Bound Peptides
作者:Anton N. Tkachenko、Pavel K. Mykhailiuk、Dmytro S. Radchenko、Oleg Babii、Sergii Afonin、Anne S. Ulrich、Igor V. Komarov
DOI:10.1002/ejoc.201301737
日期:2014.6
residue. Because the Cα-tetrasubstituted aminoacid cannot racemize, it showed full compatibility with solid-phase peptide synthesis protocols. According to circular dichroism analysis and molecular modeling, the 19F-labeled analogues of the known helix-inducing aminoacid (1-aminocyclobutane-1-carboxylic acid) do not disrupt the peptide conformation when substituted for Phe, neither in a β-turn nor in