The investigation of NMR spectra of dihydropyridones derived from Curcumin.

¹H and 13C NMR spectra of dihydropyridones derived from curcumin were discussed and their structures were elucidated accordingly. Both one dimensional, HOMO- and HETERO-COSY spectra were used in this study. Computational calculations using B3LYP/6-311G(d,p) level of theory were undertaken to predict the structural properties of one molecule. The optimized structure was then used to calculate the NMR chemical shifts at the B3LYP/6-311G(d,p) level using the GIAO method. The calculated ¹H and 13C chemical shifts were compared with the experimental data. The calculated chemical shifts are in compliance with the experimental findings. [ABSTRACT FROM AUTHOR]