Samarium(III)-propylenediaminetetraacetate complex: A water-soluble chiral shift reagent for use in high-field NMR
Samarium(III)-(R)- or (S)-propylenediaminetetraacetate complex resolved the enantiomer signals of alpha-amino acids on high-field (1)H and (13)C NMR with remarkably less line broadening than was previously reported for the Eu(III) complex of the same ligand. A widely observed regularity between the absolute configuration of enantiomers and the relative shift of their NMR signals is useful for the assignment of absolute configuration.
Inamoto
A
Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan, and Division of Chemistry, Graduate School of Science, Hokkaido University, Kita-ku, Sapporo 060-8010, Japan.
Ogasawara
K
Omata
K
Kabuto
K
Sasaki
Y