“…The ESR spectra of the nitronyl nitroxyls [114][115][116][117][118][119][120][121][122][123][124][125][126][127] C and imino nitroxyls 114-127 D were analyzed in detail.42 For the former the two nitrogens are equivalent and aN1 = aN3 while for the latter the intensity of aN1 is double that of aN3. An interesting aspect of this work was the correlation of aH values of the sugar a proton with conformations about C-2 of the imidazoline ring of the C and D series (Figure 3).…”