13C NMR des alcaloïdes des Strychnos: les dérivés de l'harmane et de l'usambarensine

in Phytochemistry (1980), 19

13C NMR spectra of some tertiary and quaternary alkaloids are recorded and the signals assigned. Graphic interpretation of off-resonance spectra and substituent shielding effects together with the effect ... [more ▼]

13C NMR spectra of some tertiary and quaternary alkaloids are recorded and the signals assigned. Graphic interpretation of off-resonance spectra and substituent shielding effects together with the effect of Nb-methylation are utilized in the spectral interpretations. [less ▲]