Fig. 5. 800 MHz 1H–15N-HSQC spectra of molecule 1 in the solvent CDCl3; (A) NH-coupled; (B) NH-decoupled; (C) 400 MHz 1H–15N-HSQC spectrum (NH-coupled) in the solvent DMSO-d6; (D) the chemical structure of the molecule. The scalar and HB mediated couplings are identified by arrows in the chemical structure. The separations providing the scalar and HB mediated couplings and the measured values along with their relative signs derived from the slopes of the displacement of cross sections are mentioned in the spectra.
