130834-72-9Relevant articles and documents
31P NMR NON-EQUIVALENCE OF THE DIASTEREOISOMERIC PHOSPHONODIDEPSIPEPTIDES. PART II
Glowacki, Zdzislaw,Hoffmann, Maria
, p. 171 - 176 (2007/10/02)
31P chemical shifts are reported for 24 different models of diastereomeric phosphonodidepsipeptides coupled from the N-protected L-aminoacids and dibenzyl esters of chiral 1-hydroxyalkylphosphonic acids.The 31 P NMR nonequivalence variations with the changing of didepsipeptide structure, solvent and temperature were investigated.Amide cis-trans isomerism were observed in the case of Z-L-proline derived didepsipeptides.Key words: Enantiomeric excess; 1-hydroxyalkylphosphonic acids; 31P magnetic nonequivalence; phosphonodidepsipeptides.