Optisch aktive 3-Amino-2H-azirine als Bausteine f�r enantiomerenreine ??-disubstituierte ?-Aminos�uren: Synthese von Isovalin-Synthonen und Einbau in ein Trichotoxin-A-50-Segment
作者:Christoph B. Bucher、Heinz Heimgartner
DOI:10.1002/hlca.19960790713
日期:1996.10.30
Optically Active 3-Amino-2H-azirines as Synthons for Enantiomerically Pure αα-Disubstiuted α-Amino Acids: Syntheses of Isovaline Synthons and a Segment of Trichotoxin A-50
Synthesis and Conformational Analysis of Pentapeptides Containing Enantiomerically Pure 2,2-Disubstituted Glycines
作者:Kathrin A. Brun、Anthony Linden、Heinz Heimgartner
DOI:10.1002/hlca.200890057
日期:2008.3
The synthesis and conformational analysis of model pentapeptides with the sequence Z-Leu-Aib-Xaa-Gln-Valol is described. These peptides contain two 2,2-disubstituted glycines (α,α-disubstituted α-amino acids), i.e., Aib (aminoisobutyric acid), and a series of unsymmetrically substituted, enantiomericallypure amino acids Xaa. These disubstituted amino acids were incorporated into the model peptides