Carbon-13 NMR Chemical Shift Assignment of Neoflavonoids
The 13C NMR resonances of some 5,7-dihydroxy- and 5,7-dimethoxy-4-arylcoumarins were assigned by two-dimensional NMR experiments (HETCOR and LONG-RANGE HETCOR) on some key compounds. KEY WORDS 13C NMR chemical shifts Neoflavonoids 5,7-Dihydroxy- and 5,7-d