Conformational evaluation and detailed1H and13C NMR assignments of eremophilanolides

Extensive application of 1D and 2D NMR methodology, combined with molecular modeling, allowed the complete 1 H and 13 C NMR assignments of eremophilanolides from Senecio toluccanus . Comparison of the experimental 1 H, 1 H coupling constant values with those generated employing a generalized Karplus‐type relationship, using dihedral angles extracted from MMX and DFT calculations, revealed that the epoxidized eremophilanolides 1 and 2 show...