B. Nyasse et al., FIRST SYNTHESIS OF A FULLY [N-15,C-13]BACKBONE-LABELED PEPTIDE - N-15NMR-SPECTRUM OF CORRESPONDING LEU-ENKEPHALIN, Journal of the Chemical Society, Chemical Communications, (17), 1994, pp. 2005-2006
Leu-Enkephalin, fully labelled with C-13 and N-15 nuclei in the backbo
ne, is prepared chemically and the corresponding heteronuclear scalar
coupling parameters measured from its C-13 and N-15 NMR spectra.